I know people can cite examples of people that became rich even after dropping out of high school or college, but these are the exceptions. Unless you have already developed something like Windows, Facebook, etc. and you are quitting to push it to market, then you are not going to be one of those people. You can also argue that being rich doesn't bring happiness, but I can tell you that not having to worry about money makes life a LOT easier and more enjoyable.
You mention you want to stream as a hobby. How are you going to afford the games and equipment to stream? How are you going to afford Internet service? How are you going to afford a place to live? How will you pay for electricity? Food? Without even a high school education, you will likely make the minimum wage required by law. Paying for basic necessities is going to be close to impossible working hard for 40 hours a week at that wage. You can work more, but then when will you have time or energy to stream? So maybe you can work hard and get a raise - unlikely, there will be an endless stream of people with better credentials than you that will get selected for promotions/positions that you want.
Sure, you can always get a GED or whatever the equivalent is to that. Don't fall for that trap. When most people hear that you have a GED, they only hear "High school dropout." It really doesn't matter the reason either. All people will hear is that you dropped out of high school. Even if you have great reasons that were beyond your control, most people will never bother to find out why. They simply won't care. They will just assume you are dumb and lazy.
Forget about working in IT. Consider being on the hiring end of the situation. If you post a job opening online, then you will easily get 100 resumes. You get overwhelmed and don't want to spend too much time on deciding on who to bring in for an interview. One of the easiest ways to start is by throwing out all the resumes that don't have a college degree on them. The workforce is becoming more educated, and it is too easy to hire only people that at least finished college.
If you are in your first year of high school, then you only have 4 more and 4 of college. 8 years (maybe less) is not a long time to work hard and set yourself up for the rest of your life. By the time you are done with college, you will probably live another 50-60 years on average. You are sacrificing a small amount of time to make your life so much better for all that time. Or, you can be lazy today and have it easier for the next 8 years compared to your peers, but then suffer for the next 50-60 years.
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Now college is a whole different story, I don't know how it is over there, but from what I gather from people that lives in USA college has become somewhat of a worthless commodity these days that's only good for draining money from your family.
You are very misinformed about college in the USA. The college degree has become the new high school degree here.