looking at it from the opposite point of view, I am 37, divorced with 3 kids, my bf of nearly 2 years is 35 and still lives with his parents.
He makes me feel totally loved, but nice to have the freedom to come and go as i please, no one to answer to, I agree if i'm going out with friends I let him know but don't have to check if it's convenient for him, I decide what I want to watch on tv. I rarely cook for us as he tends to take me out, as financially he is much better off living at home with his parents than he would be moving out.
I have often said since my divorce I would find it hard to live with someone again and this really does seem to be the perfect solution.