I quit skateboarding when I was in my 20s because I thought I was "too old." Now I'm in my 40s and starting up again, because it's so much fun, and a great way to stay active. So my advice is, "you don't quit skateboarding because you get old... you get old because you quit skateboarding." 

 Always wanted to skateboard, but could never learn how to fall down properly. 

 It's never too late! With YouTube and other resources, it's way easier now than when I was a kid.