I didn't know that gyms ran adult classes. I checked out the programs at several gyms in our area when I wanted to sign up DD, and I can't say I noticed adult classes being offered at any of them... but, these places are packed! I can't see them giving up space/coaching time when the gym is so full of kids!
You're nice to say I could still do some things. Maybe! I was hardcore - 30 hour a week training, extra dance classes, traveling, getting out of school early - the whole 9 yards. But I gained too much weight during puberty; my coach got negative and punitive when we started to have national recognition as a team, and it just got... not fun! So I quit my private team at the end of 8th grade (over 30 years ago for me) and did some high school competitions just for fun and to be with friends at school. I "lost" skills and tricks every year, because I knew more than the high school coach, and she couldn't really spot my tricks (much less new ones) anyway...
Gymnastics today bears little resemblance from the sport I practiced! When I quit, the vault was still smaller, and the highest level gymnasts in the country (the "elite" class) were more or less the only ones beginning to roundoff onto the springboard and do giant swings on bars, with just a few exceptions... so maybe some events would be familiar to me - but others - not so much! And while I enjoy watching in the Olympics, I actually miss some of the artistry that was lost on the floor and beam. Google Maria Filatova (circa 1980) on YouTube and your jaw will drop at her beautiful floor exercises... Anyway, I was one of the least flexible gymnasts on my team, and that issue has only gotten worse for me. It'd take months of flexibility work before I could do much of anything without risking hurting myself I think... and it would take probably more than a year to be able to do a glide kip! I agree that gymnastics is good for certain elements of "fitness" - strength, flexibility and maybe some sprint-type-cardio - but at least for me, I think gymnastics is too far in the rear view mirror for me to be interested. There are other, less high impact activities like yoga, and trying to find a leotard would probably make me feel worse than putting on a swimsuit! LOL...
But seriously, good for you... and good for any gym that has an adult clientele... My daughter loves it, but she's still young, has all the various issues related to her autism, and still needs an aide with her or she'll run off and probably get run over by a vaulter in another group! If she ever did love it, seem motivated to excel and displayed talent - I don't know how I feel. Commitment to any sport at that level makes me very ambivalent. Lots of pros and cons to weigh... It was much simpler as a child - I signed up, enjoyed myself, picked up skills faster than most, kept getting "promoted," and my parents drove me to the gym. .... As a parent, I don't think I'd look at the situation in quite that manner...