Well that is a bit of hyperbole, but F9 is night and day better than my regional was, and I was actually pretty happy there before I left.

Schedules are MUCH more efficient here. The 5 hour avg min day already guarantees more days off for you, but then a lot of trips average 6+ or 7+ hours per day. Furthermore, that high credit day won't have a 3 hour sit like at your regional since F9 isn't depending on mainline to tell them what routes they can fly. F9 keeps the planes in the air (high utilization, quick turns) to maximize $ which also helps your schedule efficiency. As a result, we do have some operational headaches and often cascading delays, but you go to your zen state of mind and complete your legs as best you can and go home.

15% direct contribution to the retirement account is pretty nice (not a match!).

I dont have to upgrade to NYC and deal with that headache for years hoping to flow.
Crews here are awesome, seriously this makes my life easier bc let's be honest, some of the regional lifer captains are great but some of them you can kinda tell why they are (still) where they are.

Now, we do have a lot of ways to improve, and if you let the operational challenges affect your attitude then it could really add up. But at least for me, coming here was an easy decision vs a regional and I haven't regretted it for a second, even though those pilots are currently making more money than I am.