Never been to Disney as a kid either (a bit far since I spent most of my life in europe) I went to Disney World for the first time 2 years ago with my mom who was 60 at the time (just to two of us), she loved it, I love the Animal Kingdom and Disney Studio (Magic Kingdom and Epcot not so much, it's ok but nt my thing), we are going back next year.
If you go at the right time and are a kid at heart you will enjoy yourself.