I have to back Jim up on this one.
But firstly: I'm impressed and even a little inspired by what you had to say. You've managed to get to your age without buying into the social conditioning of being attached to stuff and inflating the ego. The fact that you are interested in ideas, and have gone after what you want is awesome.
The only thing stopping you from sharing that with other people are the blocks you have in your way. You are an amazing person, but you don't see other people like that. You are scared of crowds because they represent a mass of boring people, rather than individuals. I can also see that these blocks also stop people from seeing the real you. I'm only guessing here, but I bet that people you only just meet don't find you interesting unless you are either making jokes or talking about ideas. Most of your friends you've known for ages, and you find it hard to make new ones easily.
The only way past all that is to find and remove those blocks. They are things you say to yourself about people, like "People are boring." or "People are too preoccupied with stuff." To get rid of them, you need to dig them out at the source. Find the root of the block, dig deep down and discover where it comes from. More often than not you will find it to be a fear about yourself that you subconsciously project onto other people. Once you start removing these blocks other people around you will become far more interesting.
On a side note, one of my blocks is that most people are quite ordinary, but I've found that if I ignore that then I find people who are real gems. There are plenty of people like yourself, they are just outweighed by the boring majority. You have to look hard to find these good people, but they are definately around. Often they are so much like you it's not funny.
As for people being scared of other people: A stranger who is a stranger still doesn't mean anything, but if you introduce yourself and look bad, then you've lost face. People are so scared of looking bad that they will avoid getting to know each other, to the very point of being antagonistic. This is tremendously stupid, because being that scared you straight away look bad, so in effect you've achieved nothing. The most fun you can have with these people is honestly greet them happily, and they will respond in kind. When people realise they cannot lose face in front of you, they blossom.
I hope you saw something for yourself in this, I definately did.
