Did you choose your running athletic life over having kids?

I'm 35, and have been waiting for "right partner/life/time". I feel like I'm finally in that stage now, however I'm also in peak condition. I'm in the best shape of my life (emotionally, physically, stability). Over the last few years I started racing (bikes, running, this year a tri!). I didn't start running until late, and I wouldn't say it my life calling however I finally am IN LOVE with my body!! However, I've always dreamt of a kid, but kinda only want one child if I do. But I could also be so happy to not have one and travel for races, keep going up, and win a few races in my early 40s.

Did anyone opt out of having kids for similar reasons? What happened and are you happy? Were you on the fence but decided to have a kid anyway and it worked out way better in the end? How did you balance and rebound?

I mostly see tons of posts here where having a kid ended up seemingly destroying women's bodies, ability to exercise, joy/time of self care, etc. Like not being able to do these things is the rule not the exception after kids. I would love one but have lots of concerns of losing myself and my ability to selfcare. You know normal concerns around motherhood.

This question is mainly for folx who are 35+ and either did or didnt start families. I didnt start running until I was 33 so I'm a late bloomer...and feel old and wouldn't give birth until 37+

Edit: I love how women are up voting the comment about Serena Williams when she literally almost died during her childbirth experience. She also has $200m+ more than ill ever see in my lifetime. But sure ignore the fact that as women we aren't allowed to express concerns culturally around losing our career, body, autonomy, selfcare practices, etc. Being vocal about being nervous about becoming a mom should be okay, not ridiculed. Please don't message me. Im an older woman for having kids, not 23 on my peak fertility and body. Be kind.