Why not? Gambling is only for fun and not to make money. If people gamble with the money they can afford and lose, they shouldn't feel sad because they already know that's the risk of gambling.
Concluding it that way might lead to just gambling for fun and losing is normal. Personally I find it not challenging at all, I want to take a risk for higher reward, so if I gamble that means I trust my skills to generate profit for me. Gambling is for entetainment to some but what will you do if you have skills, mind you, gambling is divided into skilled based and luck based, you're talking about luck based? or just generalize gambling that it's purely based on luck?