I never co-slept with mine, unless you count my eldest when I was so tired I'd just attach her to the breast and fall back to sleep. I'm too light a sleeper, normally, so the slightest sound wakes me. My eldest was in the bassinet next to the bed, but my youngest let me sleep more so every tiny sound woke me and I couldn't even hade her in the room.

My friend makes me laugh, because her daughter is 12 and still often sleeps with her. I asked her what constitutes the cut off point and she said she's not going to be allowed to bring her boyfriend into their bed!