I think we all suffer from a lack of confidence. I've struggled connecting with people since I was young, but the older I get the harder it becomes to rebuild my confidence.
The draining thing you talk about is real. That's why I've pretty much checked out from a social life. I go to work and home home to nothing. Besides a few semi social things I just watch TV, browse the net, and stare at the wall.
Let's face it: We got stuck with bad genes. We're ****ed