Gamble helps us to socialize with other people, and it also generate income but the truth is a gambler should not depend on the potential/income winning on his ticket because it doesn't provide the income everytime and every day. Yah a casino reduces unemployment because as a company only one person can not do all the jobs alone so he needs other people to join.
Everything that have a bad side should as well have it's benefits and to those who think gambling only ruins people's life, I think they've not come across the OP's post to see the benefits of gambling and I think the OP is very right about the socialization aspect of gambling cause I've been linked to several good friends cause of discussion concerning gambling activities and I believe their are people who's met some good friends and business partners in the casino. Also I know some few guys that where able to secure Job opportunities in traditional betting shops back then in college days and even in online casinos/betting platforms, I believe it's not only one person that handles every aspect of the sites therefore that alone is an example of gambling offering several job opportunities, and I agree with you that even though gambling generates income for people, it shouldn't be taken as a major source of income.