The bonuses aren't our money hence why should we be angry that we aren't participating in them. Bonuses are there as additional bonus to we the gamblers but when you're lucky, you'd don't need that bonus to win hence it isn't that important.
It's not Bad , what happens is that the majority of players get involved with the bonuses, because a bonus can Compromise your Deposit and it turns out that in order to withdraw if you are not Satisfied with the casino game , you can't do so Until you meet those Betting Requirements , when you do them you can hardly get your Money back, this is something that Happens to many , I don't use it personally, I avoid them at all costs , I like to play only with my money to avoid bad Times.