As I am suffering high school and my family won't stop nagging me about graduating and hard work, I'm wondering if I would gain anything useful or I should not bother. (Probably gonna edit this soon)
Or better yet: should I go to a socialist country for college
Definitely do it. Education is important regardless of what you see yourself doing with your life. Obviously you don't need to pay to learn stuff, but good programs/professors can seriously broaden your perspective forever. Plus you're going to meet tons of people along the way.
Don't get me wrong, your time and money would be equally well-spent just buying a one way ticket out of the country and backpacking around for as long as you can. These also aren't mutually exclusive.
Money stops a lot of people from doing shit they really, really wanna do. Experiences are priceless and money isn't fucking real, anyway.