I don't know, I still enjoy this game a lot. I'm above average at it (as of late I usually pull a 1.5-2 KD ratio), but not great. I actually played almost exclusively hardcore until the last month or so. A lot of the problems you deal with in TD aren't present in HC (knifers usually get raped in HC, kill streak rewards are a lot less useful due to most using the coldblooded perk), but I definitely agree that it is a slower paced game. What I totally disagree with is that it's any campier than regular TD. I think skeptics generally think this just because people play a lot more cautiously. With HC it's all about who get's the first shot off. In regular TD, you can be a little more reckless since it's much more about reaction speed and precision (if you're a quicker player than someone who just shot you, you can often still prevail). Personally I encounter more "noobs" laying down in bushes or crouched in corners in regular TD.
That being said, I've switched to regular TD lately just because I wanted to play a faster paced game for awhile. Sometimes it's fun going John Rambo. All of this is currently moot for me though because my xbox rrod-ed last week
