I think a better question to ask would be, who doesn't like to/want to do it.... disagreeing with a method is disagreeing with how another mother chooses to parent her child.

It didn't work for my children, and probably made my PND/anxiety worse. I had a panic attack finding my daughter so upset from the whole mother and baby unit thing, covered in vomit when she was never a vomiter. It just wasnt for them, so I do other things.