I like sleeping with my fiance more so than alone. There are some nights that he snores and I can still hear him with ear plugs in; those are the nights I don't mind sleeping alone.
If I'm stressed, upset or depressed I like having him next to me. We don't live together so when I feel lonely I turn the TV on low and ball up a blanket or pillow to curl up with.
Right now I prefer sleeping alone, but I wouldn't mind sharing a bed with my boyfriend. =^.^=
...he might mind it though, I'm a cuddler, I have enough body heat to warm up Jack Frost, and it's the middle of summer. xD
I live with my partner so I share a bed with him most of the time. We work different schedules so sometimes I'm all alone. I like sleeping alone sometimes because he snores bad, but most of the time its really comforting to have him there next to me.
I much prefer to sleep cuddled with my my partner. Even when she's snoring, it's music to my ears.
I have a relatively high metabolism and sleep rather hot, I've been told that it's nice in the winter to cuddle with me but not when it's hot.
I'm not much of a cuddler, and would not want to sleep with a pet or anything like that, but I do enjoy being back to back with my boyfriend when I have one. It lets me feel comforted to know that they are there. However, I would rather sleep alone then with someone that just sort of sticks to their side of the bed.