Are they mainly looking for money, excitement, socialization? Please vote and leave a comment below in case you want to add something to your answer.
It is actually everything since gambling has a very wide scope on which it caters to, especially to individuals who have the capacity to gamble. There are two (2) kinds of individuals mostly in casinos: one looking for entertainment and the other expecting money.
The first type of gambler is usually for people who have the resource to gamble. They find the act satisfying since it provides socialization among their peers and colleagues; this type of gambler also knows their discipline throughout the game and they know their limitations.
The second type of gambler is usually the common majority shared in a casino. This is potentially dangerous especially that they are prone so succumbing to addiction. If you gamble to pay for your financial problems, expect things to spiral out of control.