FFIV was the first rpg I ever played, and at the time, I thought it was the greatest game ever made. I missed so much school during the weeks I was obsessively playing through it the first time, it's ridiculous.
When I finished playing through it a couple times, I was frantic to find something to follow it up with. I played DQ2, Soul Blazer, maybe something else I'm forgetting, and then by the time FFV got released here, I was a little burned out on the whole thing. I did play and enjoy Chrono Trigger when it came out, but otherwise, my obsession with traditional RPGs kind of burst onto the scene and then disappeared again pretty quickly. I think I just liked FFIV specifically more than I ever liked the actual genre as a whole.
I had been hoping to recapture the feeling of playing FFIV when VII came out, but I got bored midway through and quit. I think that was the first time I ever quit a game (that had an ending) without finishing it.