We co-slept with our twins until recently. We have a queen size bed and had a bed rail for a while, then, when they got bigger, we pulled the side off of a crib and pushed it up next to our bed as a side car. I often found myself in the sidecar. When they were about 2 we put a mattress on our floor next to our bed and they sleep down there, part of the night anyway. Sometimes I go down and snuggle or nurse and then come back up. It was my husband who was really pro co-sleeping. He really felt they needed to be close to us. In fact, I'm the one initiated the side car and later the mattress on the floor. He'd have them still in our little bed with us. I'm the one who needs the room.