simply put, college is a 4 year party with no parents or anyone else telling you want to do. you will get mad pussy, drink mad booze, and do mad drugs(if you're into that kind of thing). nothing but good times with no rules.
college also helps you build connections that could help benefit your future, and vise versa. we've all heard the saying, "its all in who you know", well its 100% true. you never know who or what the beer pong champ in your dorm will become?
even if you got a regular job, you will only advance so far with a HS education. they're not going to pay you as much as the guy who finished 4 years of college, it rarely happens. where as with a college degree, the skies the limit, you can advance as far as you want.
yet another old saying, "its better to have it and not need it, than to need it and not have it". after 4 years of partying, getting laid, going to class and doing your shit, you'll have this official piece of paper that says employers need to pay you what your worth.
say you went into a trade and became a heating and cooling technician. from there you have 2 choices, you can be a worker or you could be a boss. you can be an employee because you have a GED(aka good enough diploma), or you can be an employer because you went to college and earned a business degree. which one do you want to be?
college isn't for everyone but knowledge never hurt anyone.
partys, pussy, connections(maybe meeting your significant other), and a degree, college is totally worth it in every way.