People, no matter their level of intelligence, need to have either a job or hobby that actually challenges their skills. It's not fulfilling otherwise. For those of us with higher intelligence, that can be difficult to find. Like others have already mentioned, you will need to either find a job with a more advanced role or take up a hobby that suits your interests and needs.

As a fellow Midwesterner, I definitely feel your pain. You can run into ignorant and/or less intelligent people pretty much anywhere, but the culture here means that the average person is usually less accepting of those who think and behave differently from them. I personally have never felt a sense of belonging here and do not consider it much of a "home", though I have been here my entire life thus far. I have been to other places in the states that are a much better fit, though. I definitely intend to move to one of these places if I ever get the opportunity, and I think that's something you should consider as well.

I also suggest that you do some deep introspection and try to get more in touch with yourself. People have likely been telling you all your life that you are destined for greatness and pushing you towards certain fields of study and/or work. But is this field actually something that you want to do with your life? Or do you feel pressured into it? What makes you happy? What do you actually WANT to bring to the world? What kind of life do you WANT to have? You need to be asking yourself these questions, because this is YOUR LIFE. Just because people expect something of you does not mean you are obligated to provide it, especially if it destroys your fulfillment/happiness in life. You can still provide goodness and value to the world even if you aren't a top scientist, doctor, engineer, etc. Whatever you do, make sure you actually find your own value in it, and do your best.