I had to build my own shelter security and ensure my own food security as of 16, but yes, i did have that advantage growing up, and as I saw it essential to have and possible to create myself, I did so.

Those things are achievable IF you are willing to give up luxuries that you may see as essential. (the kind of job you want, comfort, etc). But if you are willing to forgo those things for a few years , you can build a resource base so that you will never have to be worried about those things ever again in your life. You will always have a fallback.

The main thing you get from having a "place", even if you don't live there, but a place... is the ability to tolerate risk. Without risk tolerance, there are very few ways forward where you do not exist at the charity of someone or something you cannot control - a life where inherently you are forced to work for priorities that are not your own, and be placated by trappings of wealth that you do not really have.