to me gambling is only fun if you are winning money in gambling, but if you are not making money and continuously loosing it then you are really mot getting fun from gambling.
But then you are not playing to have fun you are playing to get profits for the people that actually play for fun the outcome is not important they are there to make friends, meet interesting people, to relax, etc.
yes it should be for completely just for fun, the winnings should treat as rewards but if we lose we should easily forget loses because it paid the enjoyment that we got when we play.