I believe that gambling can give you lessons in life as it teaches you that losing is not the end of the game , the most important part of it is to keep trying over over until you win . It teaches you also how harmful addiction is and that everyone should have self control instead of letting his addiction take over the commands .
But if we keep trying over and over again till we win, that means we will be addicted too fast. If we did that, we get no lesson yet from gambling. The real lesson from gambling is when we able to change our perseption regarding it. From, a way to get easy money - toward - a way to have fun only!