Most of it's less enjoyable than several other things I could do with that time instead. Focused cardio, especially, is miserable enough that I'd rather do a bunch of other things I find unpleasant instead (IMO). The parts I find enjoyable enough that I'd choose to do them over other not-unpleasant things mostly require a bunch of other people (sports) and are hard to schedule, and then become another thing to schedule around for other activities or things that come up. Weight lifting's fun as far as such things go, but takes up space or requires trips to the gym.

The feeling after's nice, though. Would take that in a pill form, for sure.