Yes. Firstly, you have absolutely no idea (obviously) what it is like staying at home with a newborn. Your wife is so exhausted that she can't even stay awake, but your first reaction is to slap her as opposed to taking the baby and giving her a chance to rest. What is wrong with you?
Secondly, it is nearly impossible for a mother to smother her child while sleeping, especially if she is breastfeeding. Mothers have hormones that cause them to be hyperaware of their babies, even in their sleep. Your child is actually probably safer co-sleeping with the mother than it is sleeping in a crib (this has been scientifically proven). Suffocation while sleeping in an adult bed is not caused by mom's rolling over on their baby; it is caused by a blanket covering the baby's head or something of that sort. Furthermore, skin-to-skin contact helps newborns regulate their tempature and breathing, which prevents SIDS.