I see two (really just one) reasons to try to learn to like something you currently don't.

The first one, and the only real one, is to get closer to other people. Someone you like, who you want to understand, and maybe more like. Someone it's worth becoming at least a slightly different person for, in terms of how you approach the world.

The second reason is boredom. It's actually just the first reason in disguise.

But this is why recommendation algorithms and culture-related ads can be so viscerally offensive. "Hello kids! Want to be more like Spotify's ideal of the perfect music consumer?" and the answer of actual kids is often yes, because they think other kids will say yes too, and they'd be too lonely only liking things no one else likes.