Gambling has been around since the beginning of time. Eve gambled when she took a bite of the forbidden apple in the garden of Eden. As long as human beings have free will and free choice, there will always be gambling. If gambling suddenly ceased to exist, then all the people on their high horses who like to lecture others on the evils of gambling would have to find something else to do in order to artificially feel better about themselves.
Anyway, the trick to gambling is to learn how to be a responsible gambler (even if you always lose) and avoid being an irresponsible gambler.