If you bet a $1 and you win $100 but you lose it all again the next round you bet, is it really your money that you lost even though you just won that $100? More like you lost the potential of having that amount of money which is why it hurts but if we are being honest it should be easy to move on because that money did not exactly come from your own wallet. Do you find yourself harder to move on if you lose money from a huge win even if you just bet only a small amount?
Why do I have the feeling that this question has been asked many times before?
The money(fiat or crypto) become yours after you withdraw them from the casino/sportsbook. If the money stay in your casino/sportsbook account, this means that they aren't yours. I do get your point about not being so frustrated after losing gambling profits. 100 USD can be a lot of money for some gamblers and little to no money for other gamblers. Everyone gets frustrated, when losing money, but the amount that was lost is what matters the most. Even if those 100 USD were won via gambling, the feeling of losing them is the same as losing your own money.