My Mom bought one for my kids to use. At first it was a hit, being new and all...but now only one (out of 6 kids) really uses it.
I don't like it either - for the same reason - I can't get that comfortable either! I'd much rather bundle up in a nice comfy blanket.
My kids don't know it yet, but she bought them all kids size snuggies for christmas...she bought them for $5.00 bucks each at BIG Lots.