This has always been one of my favorite game series, and as I get older I find myself seeing even more motifs and hidden meanings behind everything. This is not a kid's game in the slightest; yes it is at face value (to an extent), but the motifs, allusions, and comparisons make this series amazing!
I put in over 120 hours in my KH2 save, which for me was a big deal.
Edit: I just remembered I'd already posted in this thread, but oh well. This reply was more in-depth anyways.