A lot of college ball-players knowing that they aren't going to make it to the pro's, transition into coaching, parlay their athletic prestige into a corporate position etc.
Just because you are gambling with your life doesn't mean you can't gamble better. Problem is when people get delusional about what they can achieve vs. the reality. Most people are born and remain losers. My motto in life is to preserve my capital, so I can lose for as long as possible.