My point is, when you live on a boat or RV, or traveling around, you don't have a lot of space anyway. So, you will end up at a point where "thing goes in, thing goes out" or you won't have space. Might as well get to that point from the beginning. If you want to keep it, you'll need a friend to send stuff to anyway.
So, if you (somehow) don't have any friends, you won't be able to keep much anyway, except memories.