Many people said the gambling is just a game and another people said it is Investment. How do you think? 
For simplest explanation, gambling is a matter of fortune. No matter how long you gamble as long as you play the game, you don't have a difference with new gamblers in terms of winning the game.However in EV+ games the skills and knowledge are important and they can give an edge to experienced players and doom newbies. In EV- games the luck is the only factor, no question of skills there. Gambling is just a mode of entertainment and not to be taken as mode of earning. There are many professional gamblers but they are handful and their lives are not easy, no everyone can try that.