Hello Tenchi,
What you describe as your fear of people seems to me like it could be social anxiety or social phobia.
Socialphobia Fear of people - this can be crowds, speaking in front of groups (Glassophobia), meeting strangers, even being afraid of interacting with family member. Often diagnosed as extreme shyness. Self-esteem, being judged by others, rejection, embarrassment and acceptance may all need to be addressed.
In my opinion a phobia is not a disorder, it is a learned fear. therefore it can be unlearned through cognitive behavioral therapy.
If it actually is aa anxiety disorder the same method can be applied along with meds if you chose to take that route.
So your a minimalist, thats okay. That doesn't mean anything is wrong with you. You have no need for material things other than for survival. I wish more people were like you. Right here you are ahead of the gang because you realize that material goods do not bring happiness. And, wont be constantly searching for true happiness through ipods and the best clothes. You know this is futile, and that is fantastic. That makes me happy.
Nightmares and dreams may hold some sort of symbolism to what is going on in your life. Now I'm not saying these dreams will tell the future, that would be ridiculous. But I do think that these are products of the subconscious that may be able to help you to find out more about yourself. Check this site out. It's pretty cool actually. It is a guide to help you interpret your dreams. With a dream dictionary.
http://www.dreammoods.com/
Take care,
Amy