Yes Louis keeps saying his least favorite 1D song is What Makes You Beautiful and I think i know why.
I believe it's his least favorite song because it is their biggest hit that was written by Savan Kotecha. He was famously and loudly a dick to and about Louis, calling him a trouble maker, and the least talented member of the group, saying he would try to make himself more important because he was so useless.
So yeah, I think he's biased against the biggest hit that man ever wrote and I completely understand that.
Louis favorite song being Story Of My Life also makes perfect sense because it was the first single where all 5 boys had a hand in the song writing and people loved it.
Not only was it musically a departure from the teeny bop pop that they were making previously and beginning to come into their own sound, but they all had ownership over it, and yeah, they would be proud of that turning point.
Just my thoughts!
















