People who hated GA but are now airline pilots, how did you know you'd like it?

This question is specifically for airline pilots who hate(d) GA flying.

Been combing through a bunch of old posts in this sub and have come across several commons from people who say they are airline pilots, hated GA, and couldn't wait to blast through 1500 to get out of GA flying as a CFI. These same people said they like their airline jobs.

No judgement here, I'm just curious how you knew you wanted to continue and be an airline pilot, and that it would be worth it, if you hated GA so much?