Here are some words for your brain.
  1. I like to have pre-established friendship/connection of some kind.
  2. I'm not good looking.
  3. Therefore, I don't like the thought of going up to someone to initiate conversation purely based on looks. Does not compute.
  4. People treat you differently when you're not good looking.
  5. In social situations. (Read: every situation).
  6. Source: 27 years of not-good-looking experience.
  7. Plus, I hate small talk.
  8. Plus, I hate bars.
  9. So, there's that.