Yes, the ability to reason (and the tendency to be sensitive and intense) can be a hindrance to a happy life. If you let it. You are not the first person to feel that way, and won't be the last. It can also make your life interesting and stimulating.
You are an adult now, your parents or their opinions hold no power over you. I understand your comment about people unable to pay their bills on time as implying you are financially independent. You have access to books, newspapers, the internet, MOOCs, any kind of mental stimulation you need is at your finger tips. The one thing you should not look for in these places is human companionship, caring and love, you'll need the real thing. Reach out.
You might want to read this article and the corresponding book, it may give you insight in the questions you are asking yourself about your mental health.
http://sengifted.org/archives/articles/misdiagnosis-and-dual-diagnosis-of-gifted-childrenStay with us - today is not the day you kill yourself. You haven't read that book yet. There is so much yet to read, think and explore, would be such a shame to miss it!
