I'm almost 23 and live alone. "What brought me to this state" is that I'm an adult and i'm single, so living alone is the natural state? I moved out of my parents house when I was 20 years old (also for six months when I was 16, but that was a TERRIBLE idea and ended horribly).
I( think this whole thing is incredibly important, because I know what it did for my development. I was never independent at all when living with my parents (they are great and very supportive btw) and moving out and VERY far away from my family, was the best thing I ever did. I strongly recommend it. I "jumped in the deep end" which forced me to learn, develop and mature - it was very very hard but I learned what I can and can't do, the tools to function socially and how to be independent, through trial and error. (Mostly error, haha). If I had never moved out or if I had lived very near my family with easy and close access to all their help and support - I wouldn't be the person I am today. I would be far, far less high functioning.
About what the ideal situation would be...I have lived with a roommate, and in a dorm (worst case scenario for me, does not work at all since I have learned I don't function well as part of a larger and loosely knitted group of people), and have had two apartments of my own.
Living with a roommate was fun and I wouldn't mind doing that again but it only works if it's with the right person, so its more of a risk than living alone. Overall i think i prefer living alone and its ideal. Of course I will eventually live with a boyfriend, but that's for a different and later time in my life.
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Longtime reader, new user, on the spectrum