‘It’s Always Sunny in Philadelphia’ Season 17 to Premiere in July With New ‘Abbott Elementary’ Crossover

"seasons" are now so short that there's not that much time invested. For example Season 15 was 8 episodes.

Back in my day a season for a TV show was 30 episodes!

How many seasons should it be to not scare you off?

Also while there are reoccurring bits, jokes & characters it's still a "sitcom" and the characters don't change much. So you can watch 3 seasons, stop watching for a year, then watch another 3 season, and you're not going to get lost. The gang is funny & terrible for 17 seasons.