The main character George Bailey runs a bank that is about to be driven into the ground while his competitor relishes this opportunity. He tries to commit suicide, but God sends a guardian angel to distract George from suicide. Confiding with the guardian angel that he wishes he was never born, the guardian angel shows him what the world would be like without him:
His competitor gouged the money out of the town, leaving it poor and crime-ridden
His wife remains unmarried
George isn't there to save his brother from drowning, which means his brother isn't there to save an American troop transport from a Kamikaze attack
A pharmacist goes to jail for manslaughter because George isn't there to prevent an accidental contamination of a prescription
I'm the sort of person who remains unfazed even from watching graphic war footage on Reddit and horror movies like Event Horizon. But It's a Wonderful Life sends a chill down my spine - because its message does not apply to me and most other people. Its message that "you'd leave a large hole in the world if you were gone" only applies to people like that of the main character George Bailey, namely someone who:
Takes corporate social responsibility seriously
Can avoid being corrupted by greed
Is a good spouse and parent
I am none of those things. I've never had the guts to try saving another person's life, I've never been in the position to use a business for corporate social responsibility, and I don't have a wife and kids (and frankly, that might be for the best because I might become abusive). Would I leave behind a large hole if I were gone? No. I've thought this movie through after the first time I've watched it and have come to the conclusion that my friends would probably find some other friend, and my family would probably be richer, had I not existed.
How is anyone not supposed to have existential dread after watching this movie? Sure, George Bailey is an ideal to strive for, but most of us will fail to achieve one of the above criteria, if not all 4 of them. It sure is comforting to think of ourselves as leaving behind a huge hole if we were gone, but in practice, this does not actually hold true for most of us if we think about it. Most of us are too insignificant, too cowardly, too incompetent, and too corruptible to have a positive impact as significant as George did in the movie.
At best, It's a Wonderful Life is a wake-up call. The movie hammers in a painful but necessary message that the world will be worse off without heroic people like George Bailey, but most of us are not heroic. We can all strive to make positive changes in our lives, but even if we do, it's no guarantee that we'd become indispensable pillars of our communities like George was in the movie.
The thing is, you know that nice, neat little list you laid out? Showing all the heroic things that George Bailey had done with his life?
George Bailey couldn't see it.
We could see it because we got the highlight reel of all the most impactful moments of George Bailey's life--forty-some years condensed into an hour and a half. George Bailey had to live that life minute by agonizing minute, where most of the time was taken up by the mundane tasks of daily living.
From his perspective, he was nobody. He was nothing. He had given up all his dreams of travel and success to work a boring office job in a rinky-dink town. His life was nothing but going to work in the office all day and then coming home to a drafty house full of kids that, for all his hard work, he could barely make enough money to support. He got some satisfaction out of helping people, but they were all little people. He didn't have power like Potter, or wealth like Sam Wainwright. He had built no big bridges or skyscrapers; he wasn't a hero like his brother. He hadn't even gone to college. He was just a little guy in a little town who might as well not have existed for how insignificant his life was. Going with Clarence to the other reality lets him step outside the crushing grind of daily life to see the big picture. Then he understands that he really did make a difference, through dozens of little choices scattered throughout his entire life--but he couldn't have seen it without heaven's help.
George did have opportunities to do good that most of us don't have--but we have opportunities that he didn't have. Those things George did, while good and impactful, aren't the only heroic things that someone can do. There are lots of different ways to do good in the world, and no guarantee that we'll even recognize when we do them. The point of George's story is that no one can say that they didn't make a difference in the world--because none of us can truly see the full effect of our actions.
Sure, our good impact might be smaller and less dramatic than George's. If we didn't exist, perhaps other people would step into the gap that we left. But it wouldn't be the same. It wouldn't be a perfect fit. The world would still lose something from not having our unique, one-of-a-kind personality going through the world and taking action and making choices and building relationships. Our friends and family and community would still lose out from not knowing us. We might not do everything right--but neither did George; that man had some major missteps and personality flaws that didn't erase the good effect he had. There's no reason to think that our mistakes make our life not worth living.
George Bailey can certainly be a wake-up call to move through life more intentionally. He can be an inspiration that reminds us that the difficult choice to do good--to act out of love rather than selfishness--can be worth all the suffering that it puts us through. But he's not supposed to be an unattainable goal. Good is good no matter when in life we do it. Little actions can make a big difference. Ordinary people can have an impact far beyond what they expected. We don't have to be a pillar of the community to have a life that was worth living.
George's triumph in the end is a validation of the hard choices he made to support the community--but it's also a triumph of all the little people who live ordinary lives and have no idea just how important we are. George Bailey's gift was that he got to see how big of an impact he made--but he never would have expected it beforehand. If you think you don't matter, that your lack of existence wouldn't make a hole in the world, you're already like George Bailey. So don't be so quick to think that your life doesn't make a difference--one day you may just get the chance to learn how wrong you are.