Bonuses are actually honey pots. They are not there to be given out for free. The terms and conditions on those bonuses are quite hard to reach and in the end you will actually just lose everything before you even get the bonus. That is why bonuses on gambling sites feel scammy, because it is almost impossible to get the bonus anyway, they just make you want to bet more and more without realizing that the fact is that it is next to impossible to do the roll over requirement.