@Mor - Footed pajamas look cute but I always wonder how comfortable they really are. I don't remember wearing them as a kid, but I know as an adult they would make me feel very claustrophobic. I'm sure they'd be very warm, but I like being able to regulate my temperature once I'm in bed. If I couldn't stick my bare feet out into the air when I got too hot, I think it would really bother me.
I might just be a bit too fussy though and it's true that I live in an area where it doesn't get that cold at night, so generally feeling warm isn't that much of a problem.