I absolutely don't think that college education is worthless, but some people make it worthless for themselves and only waste time.
I personally think that it shows you a way, and offers a first step on a path, and it's there to show multiple paths that you might follow if you don't have a passion for something you already know that you want to do.
But you have to follow these paths by yourself. It's there just to show you a way, not take you all the way, which is what some people assume it does.
If you go to a med school I assume they have to teach you more because you'll be responsible for someone's life, but for example with IT - most people graduate with absolutely basic skills and IT-centred mentality because you've spent 4-5 years studying that, so you think you know something about it.
That's because they teach you basics of a lot of things, and most people only learn basics of those basics to pass the exams and are happy that they did because for most people they are rather hard.
Once you pass that exam you start learning new things (new basics) and rarely go back to basics of what you've already learned. Unless it's about using Photoshop to edit a family photo or write a short script that checks the weather for you. Which is something that you could've learned in an hour or two since you study IT.
So you gratuate and know basics of basics, a lot of them. If it was IT and you really passed all exams very well you know some programming in various languages, databases, multimedia, networks etc etc but in reality you don't know them, you just have some insight on how they work and how to learn them. If you were presented with an opportunity to do something big, serious in any of those fields you'd be clueless about how to do it, you'd just feel more comfortable because you'd feel like it's possible to learn that. But you're barely on the first step on that way and there are still dozens of them that you'd have to accomplish to possess enough skill to be able do it well.
If it was business chances are that you think you could manage a huge organization, know macro and microeconomics, accounting, corporate law etc etc.
Of course you don't know any of those things, you just have an idea of how they work and can answer basic questions and pretend that you're smart. Now those are majors that are rather useful, the situation is so much worse if you're doing things like journalism or sociology that don't even try to teach you any skills that make sense.
What you should do is learn the skills that your professors "talk about", pick something you want to do and just do it.
You can spend 50, 70, 150 hours to pass a skill-related class (and you might be a lazy ass and don't even do that) but you will need to spend dozens of times more time to be good enough to say that you have some skills in it. And you have to learn that by yourself, college is there to show you a way and show you how to do it. And comes with people who already know something and might help you on your path. And you can also meet people who are either lazy bums like you, or those who want what you want to do like you, and might be able to help you in various ways.
So my conclusion would be that college is a huge waste of time and money for a lot of people, especially lazy bums. On another hand it will give you great things if you take proper advantage of it and if you want to learn something and do something ambitious with your life in the first place.