The risks include things like falling out of bed, which we solved by getting rid of the box spring and putting the mattress directly on the floor. That also let

The risks include things like falling out of bed, which we solved by getting rid of the box spring and putting the mattress directly on the floor. That also let our daughter be more independent since she could nap, then get out of bed herself once she started crawling. There is a risk of the mother rolling over on the child, but only if the mother is taking some sort of medication (or drinking alcohol) which is interfering with her sleep. Fathers sleep more deeply than the mother, but we ended up buying two mattresses and setting them side by side. Of course I'm biased, we no longer speak with a couple we were acquaintances with because it was unconscionable to let their child scream and scream all night because of "convenience", I don't know why you'd bring a child into the world to immediately abuse it. Co-sleeping obviates the "necessity" of "sleep training". Just because something is the norm doesn't make it ethical or optimal.