37. Bought the WRX for a winter/autocross/fun car. All I have done to it thus far is a Maddad Whisper Axle Back Exhaust. However I do plan on doing coilovers and a boost gauge...but thats about it. I also have a Acura TL that is my daily or when I need to attend business meetings. That car I leave stock. Also have a heavy modded 98 Mustang Cobra Vert that I have built that only sees nice wekend weather or a car show.
I think age shouldn't dictate anything you do in life. Enjoy and do what you want, and if that is driving around in a slammed WRX then so be it.