Our DD10 and DD11 show up at our bedside after nightmares, and when they are stressed. It's rarer and rarer with the 11 year old, and she asks, "Am I too old to sleep in your bed?" I know they will soon decide it's not ok to sleep with us. I just hope they always snuggle at bedtime!!!!
My brother in law was not born in the US, and he is baffled by the backlash against co-sleeping. It is common in his country (as with many around the world).