Reading another thread in here made me remember something my son said to me the other week. He's just four and started school this time. (I know it's December but as he's an August baby I still think of him as being young)
He's been a bit unsettled recently and ended up in our bed a few times usually falling straight to sleep until morning.
I sleep with earplugs in so I often wake up and he's just there.
Turns out he and his older sisters don't come to my side of the bed because they know I will get up and take them back to bed. So they creep round to their dads side and he just lifts the covers and they crawl in! I have to admit it made me laugh but then feel a bit sad!
It's true though. I'd end up taking them back to bed and staying with them until they settled and probably staying awake far longer than then.