I hated PE with a passion. We mostly played sports I was bad at, but weren't taught how to improve at all. The only ones I ever did well at were artistic and rhythmic gymnastics, and, weirdly (or perhaps not), diving, which I remember we did for a term. If we'd been taught how to play the sports or even what the rules were, maybe it would have been a bit better, but as it was, all I could do was stand there helplessly while everyone else threw the ball amongst each other, and never to me. I'm asthmatic, so any of the running activities and swimming were nigh impossible for me to do anyway. Most of the health classes were basic and/or repetitive, and centred around what would happen if you did drugs. I can now tell you a lot about how to do drugs, but I wish the science of exercise had been emphasised instead, because that would have been interesting. I don't think the word "endorphins" was ever even said...
Obviously most of your children aren't in such a position, because they're all gymnasts, but I want to highlight that the way the subject is taught makes a really big difference in the experience. I never had a PE teacher that was educated in the mechanics behind the activities, or that was particularly competent at teaching drills or the rules. If I did, maybe I would have felt differently. As it stood, PE was just two hours of ball sports a week, where the naturally good kids had a great time, and the pretty bad were totally left behind.
When I rediscovered gymnastics in senior school, part of what I loved about it (other than competent coaching) was that it turned out I wasn't so terrible at sports after all, just the ones we were forced to play in PE. The structure of the school programme is really dreadful.