What to do if your baby won't sleep in a crib
I agree with what Leah said in another thread, depending on the age of the baby. Not for young infants under 4-6 months, but definitely for older ones over 6 months. Even then I'd make sure all their needs are met and there wasn't something physically wrong.
We only used a crib with our first two children. After that we slept with our babies. We slowly ran out of room for even a crib when we were in our townhouse so I am glad we did it the way we did. It just eliminated unnecessary stuff and issues to deal with such as this one. (wry smile).