Oh, this is too funny and sad at the same time. I am soooo like this too. I always want the Magic Kingdom to be my last moment in the parks and I have to try really hard not to cry when I leave. AND I started planning our next trip the very next day after I got home about 3 weeks ago. ANNNDDDDD my son made the comment "we're walking the death march" as we were wheeling our luggage to check out.
A moment I have to share though. My 19 year old son and I went by ourselves this last trip ( had a great time!!!) and as we were leaving the Magic Kingdom after watching "Wishes" one night, he hugged me and asked me if I cried. I had to admit I had come really,really close to having cried and he told me "Well, I can understand if you had". Now this is the same boy that always makes fun of me when I cry at movies etc. I'm so glad he's struck with the "disney bug" too. I'm trying to get in as many trips as possible for the two of us before he has his own family to go with one day.