I really enjoyed the trips I took as a child. we only went twice when I was young, I think about 1983 and 1986.
I have so many vivid memories from those trips that since much of Disney has remained the same, brings me back to being a child again.
The one thing I really remember from years ago, was the smell in Spaceship Earth when you get to the dark ages when it smells like burning or smoke. It still smells the same today and brings me back in time.
My wife and I have been to many trips in the past almost 11 years together. I take it in more now. We have two girls who enjoy it and I know we will have so many good memories. Being older, I can enjoy and keep the memories a little more with them than trying to remember when I was a kid.
I think it is as good, if not better to go to disney as an adult. (especially since I can drink around the world now) lol