Watching a rebuild is fun to me. It's the reason I won't watch the Bulls anymore, the treadmill is not a fun place to be. I'm excited to watch the Sox next season if it's just a bunch of 24-year-olds trying to make it in the league and maybe break out. Some guy last spring training, maybe Soroka or Shewmake or some new(bad) addition, said the team was going to impress because it's a bunch of 28-year-olds fighting for their careers. I don't think anybody bought that, but I might buy it when they're rookies and second year players. There's some potential for fun or a surprise when there's players who could break out. In other words, I'd much rather watch Brooks Baldwin play second base than Nicky Lopez, rather watch Ramos than Moncada, Vargas than Eloy, etc. even if it means another 100 loss season.
Sports is still fun. Maybe watching it on TV gets old after 70 years or whatever the average age of this board is. Or posting about it on the internet since the day of newsgroups. But its a timeless thing that has been fun and socially relevant since, I dunno, they started recording history.