Have you ever employed a teenager? They lack life exp. They lack confidence. They really don't know much at all about anything on a professional level. Sometimes you get good ones, but the majority are not sticking around for long or are doing a poor job. Your customers wont return with bad experiences and low quality. College is a scam for most. Put these young kids in debt for most of their life to earn a degree for which they are not even into. Better off going to trade school. And by the way, the lack of labor in skilled trades is astounding right now. Making $20/hr is better than $12/hr, but it's not really going to make a big dent in your college debt.

edit: talk to any large employer and ask them about employing the younger generation. All of them will say they have no work ethic and sit on their phones the whole time. You know what else, they think they should be paid $100k/hr and be millionaires...so try managing a bunch of people with that attitude and try not to go crazy. These companies are now reaching out to the older crowd for which they used to discriminate against because the young people suck.