I'm not a big snuggler. It's hard to fall asleep when someone else is all wrapped around me or vice versa. Same thing goes for sitting on the sofa (watching a movie, etc.) with someone. I'd rather just have my space.
I also cannot sleep wrapped around a guy or having a guy wrapped around me, but I like to do it until just before I fall asleep....and then again when I wake up in the morning.
When I was in Dallas about 10 years ago, I saw a guy's ad in the alternative newsweekly in which he was advertising for another guy to sleep with, and the ad specifically said just sleeping, no sex. And I was like, "yeah, I get that" (although I like sex, too, and was in a long-term relationship at the time). Maybe those of us on LPSG who like the idea so much should start a movement for it. It would make the world a happier, warmer place.