Dinosaur

In the movie "Step Brothers", Robert was talking about losing his "dinosaur". It was his kid in him and he said it is good to always keep your dinosaur. When I thought of what my dinosaur was, I discovered my dinosaur was skating. I can't do it all my life. When I'm old I won't be able to. And then I realized I see a lot of old guys skating. I wonder if I will continue to skate as I get older. I hope I don't lose my "dinosaur". What is your dinosaur?