Sorry but your point is pointless. Of course the circumstances matter. You have NO idea what they are AT ALL. You don't know him, or his family, or his father. Just because you would need to be with your family it doesn't mean he does.
There's no point speculating on things you know nothing about, he's made a decision, he's a sensible adult and I would assume he hasn't made that choice lightly and has good reasons. I've no reason to think anything else.