I am 34 and I love to get pics taken with the characters! It all part of the fun. Brings out the kid in all of us. In fact, every trip I make sure to get a pic of me with my favorite princess!
When I bring my 66 year old dad, he loves to have his pic taken too. And in Oct it will be DBF 1st ever trip to WDW, and he is 36 and can't wait to have his pic taken with Goofy!
I don't do the autographs though, but I did when I was little.