I co-sleep with DS most nights and he is 4 in march. He was bf until he was almost 3. We bought him a king single when he was 6 mnths old so I could sleep with him.
Between 1 and 18 mnths we did encourage him to go to sleep on his own and I join him most nights from after midnight. We have had a few nights where he has slept through and there will come a day when he won't want me there.
There were definite days where I was all cuddled out but now he is older and very independent I like being able to cuddle him at night cause there are days where I don't get too.