^ Definitely right, just like spending bucks for buying tickets and popcorn in watching movies. How about renting a girl in a club and spend a lot of your money just for entertainment in your self and have fun. Kinda wasting money but actually you can afford it and why not.
Gambling is similar to that if you are entertained on this very well, surely you will come back and willingly to spend as long as you will have have a fun activity. Nevertheless, different people have a different reason, others have a double purpose. They gamble for fun at the same time hoping that they will earn a profit.