... You shouldn't not socialize because of fear, human beings are born to social with others, and it's easy to make friends if you want them ...
Exactly. It's not that difficult to find friend friends, or at least people with common interests with whom you can talk to, if you just try. Join a community, like a math or science club, and you'll be surrounded by people with interests more or less the same as yours.
It's a little arrogant when people act as if every stranger whom they converse with is an ignorant, boring person with nothing good to say. Maybe quit chatting it up with randies at a bar if you're looking to talk about math.
Maybe the reason some of you don't talk with others often is because you go into conversations with your self-imposed superiority, expecting the other person to be stupid and boring. People catch on to that pretty quickly, and nobody appreciates it.
Besides, you're a relatively boring conversationalist if all you ever want to talk about is politics or math or science or philosophy.