Here here, I also commend the resurrection of this tread!
I'm with everyone as far as the obvious foul tastes being bad...but more than that, I find that I sometimes really love a new cigar I've tried, buy a box & overdo it and then get *really* sick of that cigars profile..
the most current offender is the Crowned Heads Le Careme - wonderful cigar, really flavorful maduro, but I got really tired of its taste quickly. So I've relegated that box to the bottom of one of my Coolidors.
I also in general don't like most cigars that have too much of a sweet profile, I'm definitely more in the dry woodsy/earthy/mineraly camp.
