My boys are 12 and 7. The older one co-slept until the baby was born so until he was 5. Now I couldn't pay him to sleep in my bed. The baby did until about 1 and then he moved to the crib that was still in our bedroom. Now at 7 he sleeps in my bedroom floor even though he has his own room and bed, it's what he likes. Or sometimes, like last night, he slept in the bed with me and the husband slept on the couch. It may have something to with the fact we still call him the baby.