I'm 49 years old and I've been a Calvin and Hobbes fan from the very beginning. I own all his books - even all the repeat hardbound volumes. I have a framed copy of the final Sunday strip hanging on the wall in my office. Back in the day, every morning the first part of the newspaper I read was C&H. Nowadays, I don't even read the comics anymore.
I still read the books... to my kids. They've all grown up with me reading them Calvin stories - laughing hysterically (even though I've read them a dozen times over). Best comic strip 'ever' and I mean ever.

I can imagine reading them and laughing when I'm 80.

C&H fan for life.