What were his parents like? Did his father do something similiar to what you described? Did he run to someone else w/his problems when the going got to tough?
Your h could be addicted to those "hormones" that trigger the "feel good" feeling. The rush may be what he's looking for in life. There are some out there that just have to have that rush in all aspects of their lives in order to live.
What about you? How are you holding up through all of this?
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.