you're definitely NOT alone on this one. I have ridden my trainer for 2 hours once this winter (and had a huge saddle sore to show for it afterward). My limit is about 1 hr and then I want to strangle myself.
I wish I could love it more. Definitely better than the spin bikes at the gym, but hardly by a huge margin.
It's a necessary evil, I'm afraid. Even tho it's supposed to be 60 degrees today, I get to a certain point of winter that even THAT feels cold (well, that and the wind is supposed to be 30 mph).

I want spring/summer back...