Is it normal to hate college?

if everyone says that college is the time of your life 

I don't know of anyone that says that.  Certainly no one in my family.  I thought it was a lot of hard work & study.  I was dang glad when it was over with.  I have a comp sci degree.  

it sounds to me as though your problem isn't college but rather serious mental-health issues.  People who are not emotionally healthy are usually not going to have a great experience at college, because they are not well, and they are often not going to do very well academically either. College involves a lot of pressure, but most people do cope and also find plenty to enjoy during their 4 years as college students.

Frankly, you needed to take substantial time off from college and get your mental-health issues under control.  I'm a college professor, and I've seen a number of students do that, because their issues were interfering with their ability to make the most of college.

And yes, unless you make a serious, intensive effort to address your problems now, they will be ongoing. That will teach you that college wasn't the problem.  

Not unusual at all.  Plus, you feel the way you feel.  It is valid.

There is some relief to get an actual job and not have some paper, or the need to study a bit more hanging over you all the time.  Plus, in business your managers will likely (no guarantee) be better to deal with than self righteous professors.

Lot's of people graduate and then find they have more time on their hands.  

So, be positive and move forward.