I've watched a couple of USFL games and it's just ok. I wouldn't miss it. Used to watch CFL when I was a kid. Enjoyed it for a minute, but like the USFL, I wouldn't really miss it.
I started getting back into soccer and Nascar when Covid started and still watching those regularly. So for me, my sports are NFL, Nascar, USMNT, NBA, MLB, Olympics, and then the occasional random watch like bowling, drag racing...stuff like that.