I go the other way. My 20s were filled with good things yes, but also many embarrassing life lessons where I didn’t read the room appropriately or missed possible opportunities for romantic relationships. I had a short period of doing silly things to try to impress others. I spent money on stupid shit, and stayed at a job for way too long before finally moving on which put me years behind in my career. I got addicted to World of Warcraft for an entire year and accomplished absolutely nothing with my life. I never physically injured anyone or committed crimes, but I could have been a better version of myself. I do value my 20s, but really because of all the lessons I learned that made me a better person in the years after.

You can keep my 20s, thanks. My 30s were pretty excellent though and I would probably be okay being 33-37 until I die a regularly human lifespan.