Gambling is for fun and enjoyment and those who enjoy this way would not worry much even if they lose the money. But for those who want to just make money out of it would have difficult time as they would want to keep wining every time.
It's true, it will not hurt us if we are in control of the money we spend in gambling.
Spending is more appropriate for those who do it for fun as they surely would understand easily that their chance to win is lower.
Looking for fun in gambling is always good since every gambler have their own favorite type of game, and even if we loss, it's always acceptable.