The brilliant part of FFVII's ending was that it left it completely ambiguous as to whether Holy wiped out humanity or not. Obviously now with AC no one will understand the years of wondering just what happened after that big flash.

The only endings I didn't like were FF10 and FF13. FF10 was mostly due to my dislike of Tidus as a character. I suppose if you were interested in the Tidus/Yuna relationship you would have liked it.

And I thought FF13 was just plain awful. I don't feel like getting into it at the moment.