My friends have finally relented and stopped trying to drag me out because I "act like a depressed person".
Going out seems to vitalize them. For me it feels like every person I meet is a vampire draining me.

I tend to think that they have a difficult time realizing that as an introvert it's easier to be alone. I know friends who worry that I prefer time alone and since they crave being with others they have difficulty understanding the want/need to be alone.

For me it's not so much that I just have to just get out and do it, I don't get the pleasure from doing it. I'm not afraid, or shy, or embarrassed... I just don't enjoy it most of the time. Like counting grass, sure I can do it buuut....

I like the times when they want to watch a movie. I'm like great, I've been dying to watch this documentary! YOU JUST HAVE TO SIT DOWN AND DO IT! Oh wait, that only works when it's your hobby?

Yes, absolutely. Some if my extroverted friends just don't get it. They think I'm not trying hard enough.

I think this is probably more common and relatable than it is made to seem by people who talk to much. The other introverts just aren't out there giving there opinions about it.

you have to be one to understand

People who are not introverted just do not understand.