When looking at the reasons why a homeless person would rather camp out on the street rather than go to a shelter, a key reason is to be free.
There are many different ways of understanding freedom. I want to describe four. (I am purposely not going to name my sources. I will leave that a mystery. It is the ideas that are important.) Great thinkers though the ages have seen freedom as a key human motivation.
An 18th century German thinker saw freedom as being centered in the human decision-making process. I deliberate about my desires, beliefs, values, friends, etc.