I was 3 years old.
My dad grew up the 3rd youngest of 12 children, whose dad died when he was 10. So he didn't have much of a childhood.
He certainly made it up on me and my sister!!! He and mom were constantly taking us places or doing things with us. I listen to my friends talk, and I know that I could not possibly have had a better childhood.
We went to Disney World many times when I was growing up. I thought it was normal for people to pack up every couple of years or so to go there. When I met my now DH, and he had never been there (and he was 25 at the time), I couldn't believe it!
After his first trip, he was hooked. We joined DVC soon after that, and now we are there at least once a year and twice if at all possible!
Our DS6 loves everything Disney, and our DD2 just can't get enough of Goofy. He is all she talks about...well that and that she is a Princess too!