Answer:
Step-by-step explanation:
If you've gone through a near death experience, like a car crash, the suffering you went through might give you a newfound appreciation towards life and encourage you to make the most of it.
Most homeless people are constantly stressed and unhappy, worried about what they are going to eat, where they will sleep and how they will find work. This constant stress can way down on a person, making them depressed, and in order to relive themselves of this stress and depression one might self medicate with drugs and alcohol.