M.N.
My son was ill and I kept him in our bed to check his tempature because we would have to get him to the hospital quick if he had one. My daughter though no illness, slept in our bed when my husband would go to work very early in the morning and I would breast feed her and hold her and we would sleep some more. She still occasionally came into bed after my husband goes to work if she was cold. I think it is a great thing and they do grow out of it. It makes them more secure and confident. Check this out
http://news.bbc.co.uk/2/hi/uk_news/education/8636950.stm
I don't know what people are thinking that do not hold and rock and spend time touching their babies. That is what mothers do. And it helps have smarter kids. We need to get back to the basics.The time if fleeting with them. Love them while you have them.