There's nothing wrong with you at all! You're an introvert!!! So am I!
Search "caring for your introvert" its an article about introversion that will make you feel understood!!
Here's the deal, unfortunately we introverts are out-numbered by chatty folks, so we have to explain our entire lives why we can only handle socializing in small quantities.
Its totally OK to desire social ties and time to yourself
If you struggle with depression, I'm glad you're on this blog, and hope you get all the support you need!