As a trader definitely trading is best and if we ask it from a gambler then definitely he will said gambling is best than all of them.
So we said what we like it. May be you are trader that's why you are saying it and also i agree with you, because of in trading we could save our money and if we have loss then at least we have a chance to recover it for holding. But in  gambling if we loss the game then no money, simply our hands are empty.