I hated X because I found most of the characters sans Auron and Lulu to be incredibly obnoxious.

X-2 just made those problems worse by largely getting rid of the few characters I could tolerate, and somehow making Rikku even more annoying.

It says something about how good the combat was in those games that I managed to power my way thru X and a fair chunk of X-2 before it just got to be too much for me.