Baseball in general is in long-term decline [1]. And of course football rules supreme. I try not to yuck someone else's yum and I'm not the biggest sports watcher in general but personally I find baseball to be boring. There's too many games. They go on for too long. Not much happens. I think the fandom, such that it is, is from older people with nostalgia from when it was a far bigger deal and when they probably grew up playing it themselves. The latter is increasingly being displaced by soccer
[1]: https://news.gallup.com/poll/714281/football-top-sport-socce...