Also: Convenient things are more likely to actually happen.
Look, people are tired, there are only so many hours in the day, we're all doing our best out here.
If there's a public good that you want to happen, making it as easy and convenient as possible matters.
Indoor plumbing makes it more likely that people will stay hydrated.
Having mail delivered to your house makes it more likely that people will actually check their mail regularly, rather than forgetting to go to the post office.
Having blood drives and vaccinations at places people already go, like work, means they're more likely to go for the inconvenient needle jab. At least it's not an extra trip.
Hell, having routine trash pickup has wildly reduced the amount that people just set trash on fire or leave it laying around their yards. If you walk around an old farm, you'd better be up on your tetanus shots, at least here in the US.
If it's being done right, a lot of government is about making the best course of action also the cheapest and most convenient one, and tbh that's great. It's not always how things are done, but I think it's one of the better carrots society has, as opposed to sticks, which don't work well.