I'm really bad about even consistently playing VR games for fun, let alone for exercise. But once I finally make space, boot up the gaming pc and reconnect the VR kit, it's almost always worth the effort and I kick myself a bit for not playing more often. I do have fairly annoying stick drift on my (Index) controllers though, so that strongly dissuades/prevents me from playing games that are designed around using them.

It's been a couple years since I've really played any Beat Saber, but I think my favorite custom map just for fun was "Happy" by C2C (YouTube vid [not mine])