I struggle to justify spending a lot on sports with how good the TV coverage is now. I can get essentially great seats for almost nothing. Only 3 things I might get season tickets to but I just haven't lately.
Nashville Predators - One of my favorite organizations, I had season tickets for years, but when they went to the Cup and almost won, the ticket prices soared for season tickets and I didn't renew. (Almost 1000$ per seat more)
Alabama Football - Had season tickets for years with my dad but he can't do long trips all the time anymore and with my business taking off about 5 years ago we ended up selling more than we were using so I decided to just let them go.
Wrexham - Would love to watch these matches since they're not super pricey and it's a very fun place to take in a match. However, they're in England and I live in Nashville, TN so unlikely I'll ever purchase those.
I buy single game tickets for the Titans, the Sounds (MLB minors team here) and Nashville FC but mostly once or twice a year.