Same for me I was 10 when KH came out, my dad bought it for us (me and my sisters) and like always he and I shared one save.
I got up to the end of Hollow Bastion and got stuck then KH2 came out, I played that for a while but then my parents seperated in late 06 and didn't play KH agian till last year when I restarted KH1 and finally finshed it, played half of COM then KH2 and Days, bought a new psp cause my old one broke and played BBS (good year for me ).
I didn't really think the anniversary box would be a HD remake (1FM+ReCom+2FM) but i thought that it would be at least some thing to do with KH1 or at worst something that would be worth getting but for me this is not.