Mary that sort of thing happened to us.....Izzy was crate trained and always slept in her little bed in her crate for months after we got her (6/07). Then when we knew she could hold it all night my husband...hehehe....he was the one that said why can't she sleep with us? Let's give it a try. That little stinker has been in our bed since...it's like Cindy said....it's nice to have her cuddle up to either one of us and smell her. Izzy is so tiny and we have never had a problem with rolling on her, etc. Hey - when she gets too warm or too tight against us she moves.
The only problem we had was over the holidays when she had the runs for a couple of nights (we switched food on her and it was too high in protein) and I tried to keep her in her crate...she wanted no part of that but I had to cause we didn't want her to mess our bed.
To each his own....some like in the bed some like out of the bed...for us....life is short and we like her with us.
It's whatever works for you.