In everyone's opinion, in essence, all gamblers want any bonus from a weekly or monthly casino.
Gamblers prefer bonuses that are unique and with easy conditions to be taken by all gamblers who enter the casino.
But sometimes casinos provide bonuses with conditions that are easy to be abused by customers who take advantage of this bonus feature and usually use several accounts for gambling.
So the reason gambling gives bonuses with several conditions is that it prevents cheating.
In most cases gamblers don't need so many bonuses that will end up draining their entire balance trying to meet wagering requirements, even though some casino bonuses are abused by violators, we still have casinos that make it almost impossible for gamblers to make it out with the high wager requirements on bonuses and balance.
-But then we all want to have some form of free money from casinos at least to ease the pain of losing some time.