Everyday my friend gambles with his money as same with his life and he always gambling throwing away his money for nothing but losing and the worth part of it is he owes me money 
No Bro Gambling is Not Worth Playing Fir Your Friend Because As You Said Above that He is Throwing Away His Money For Nothing and Losing So According to me He Doesn't Need to Gamble Because If he Continue Gambling One Day He is Out Of Money And No One Can Help Him....