Tucking kids in (not preggo related)

Stephanie. • Military wife. Pregnant with baby #3!
I hope this post is ok and I wish they had a non-pregnancy related chatter board! Anyway, I have a 6 and a 7 year old and I still tuck them in. I have only known my stepson for almost 9 months and from day 1 he asked to be tucked in as well. He's almost 11 and it feels very odd. It could be because he's my SS or that he will announce "I am ready to be tucked in" which I find aggravating. My question is when do you stop tucking children in?