Business is business they always do this to earn more profit and invite others to join their platform. It is only you if you want to get persuade by them but still it is a bonus which is free money (but still you can lose it) and it will trigger you to deposit money to play more. I remember those crash games that I've played and its my first-time , they have daily faucets which I thought i wont be get persuaded by those promotion and wont deposit money but after a day I'd deposited my money and lose it all.
And that is very common, since it is not rare to receive a bonus and if we had bad luck we may lose it relatively quickly, and as such we are left with an unsatisfactory sensation and then we may make another deposit, still as long as we are not betting an amount we cannot afford to lose then there is nothing wrong with that, however there are some gamblers which make a habit of chasing their losses and this can be dangerous as when you are not thinking clearly that is when massive losses can be incurred.
Giving bonuses or getting facilities from faucets is a form of business from casinos to get members to deposit money after experiencing the pleasure of playing gambling using free money. And that had a lot of effects on gambling players so they started trying to deposit more money to continue gambling and that's a common thing for gamblers. And some will chase earlier losses by depositing money, especially if there are more bonuses they can get from the casino. And if you only want to register at one casino, make sure you can get one that is truly trusted and has a good reputation so that you won't have any problems in the future.