I agree with you 100%!!! I think Disney tends to be more magical to those of us who grew up with it. My husband only went to Disney once as a child, and of course I've dragged him a bunch of times as an adult, but I can tell it's not as exciting to him as it is to me who has gone 1-2 times almost every year of my life since I was born 23 years ago. When I go on a ride like the Haunted Mansion its not magical to me because I think it's a great ride, its magical to me because I remember how excited I was going on it as a little girl and it brings back so many emotions and wonderful feelings.
Even though Rock N Rollercoaster is probably my favorite ride in WDW, I have literally no emotional attachments to it and if it closed tomorrow I wouldn't care. But when they redesigned "Journey Into Imagination" and put that idiot in place of the dreamfinder I was literally heart broken over it. I have so many childhood memories of the way it used to be and of sitting down with the dreamfinder and figment outside and being so awestruck by the little figment puppet (I didn't know he was just a puppet back then!) and when they took the dreamfinder away they took a piece of my childhood away, as stupid as that sounds. I'd be equally devestated if they ever did anything to the other rides I have so many memories of like Pirates, HM, etc. But all these new rides they come out with I don't get any "magical" feelings riding them, as much as I love them. Buzz Lightyear is an awesome ride, but the sentimental side of me wishes it was still the "airplane ride" from when I was little.
So anyway, what I'm saying is, if I went to Disneyworld right now and it was the first time I had ever been there I highly doubt I would feel anything magical. I would think "wow, what a nice, clean, friendly, fun theme park!" but I wouldn't stir up any emotions in me. But since the place has so much sentimental value to me I am overcome with emotion and excitement everytime I get near the property, and that is what I would describe as "Disney magic".