I tried sleeping with my babies, but the constant slight crinkling noises from their diapers or diaper-covers kept me awake, I could not breast-feed on my side without smothering them, and frankly it turned out to be easier to keep them in a bassinet next to the parental bed for awhile. It's impossible for me to imagine anyone who was not drunk rolling over on top of a baby and not feeling the big lump under his back.
I tried nursing my babies in bed during the night but I had to force myself to get up to the rocking chair, because I was falling asleep and was so afraid for the baby....