I know this isn't a new thread, but hey, I'm old, cut me some slack! Besides, all this is very new to me.

Guys my own age really don't seem to remember how to have fun.
It always amazes me how true this really is! Somehow most people just forget what it was like to grow up. It's like they were born at 25. Just the other day, a guy I know had to get off the phone with me to call his landlord, so he could complain about the kid below him playing his music loud enough that the base was bothering him. I was thinking... you don't wanna come over here then!
For the last 4 years of my life, I played the dreaded "World of Warcrack". It was a nice diversion, and I met a lot of really great people, many of which I actually met in real life. Most of them are also in the 13-20 age range. I never kept it a secret how old I was, and I was BY FAR the oldest player in the group I hung with. (The sad thing is, I was also in better shape than most of them) But other than some good natured ribbing about me having baptized Moses, or living on the other side of Barney Rubble... I think at one point I had something to do with crawling out of the primordial ooze... there was never any issue with age at all. And trust me, for every joke they came up with about my age, I would always agree, and continue adding to it! So just like Parkour itself, it is a mindset. If you act like a kid around kids, they will take you in as one of their own. Usually in awe that you do still act that way. If you act like an adult, and tell them to keep off the grass, don't expect much love. (And if you planted grass for it not to be walked on, why not just pour concrete and paint it green? It's much easier to care for!)
Oh, and speaking of mindset... I don't know if dilet2e is still around, but yes, you ARE a traceuse! From everything I've been reading, you are not required to get through a set of obstacles as efficiently as David Belle can to be doing Parkour. All you have to be doing is thinking about it, and be doing it as efficiently as YOU are able. If that means taking the stairs instead of tic-tacing to a face plant, then so be it. Hopefully you are trying to improve, though! LOL