Just noticed this thread myself... ...Trollbait, indeed.
Anyway, I was (am ?) a FFVI fan (fanboy ?). My first FF was FFVI, and after beating FFVII for the first time, I have to admit I was left with a sour taste in my mouth. At the time, I didn't know the series was all about change, and I couldn't get over the fact that the characters were so alike. Where were my Tools, my Rages, my Blitzes, my multi-parties dungeons, my 4 characters teams, and my non-linear second world-map ?!... ...Not to mention the fact that musics in FFVI were of higher quality...
But, as time went on, FFVII grew on me quite a bit - so now, I think I like them just as much. One of the reasons being the fact that I played FFVI way too much for one lifetime. You can call me a FFXII / FFXIII hater though.
I think that if there are FF games to hate, it's certainly not VI or VII since they're among the best (with FFX).