1. The ocean
  2. Touching door handles
  3. Online dating
  4. Posting pics of their children online
  5. Pretty much all food you don't prepare yourself
  6. Traveling
  7. Using debit/credit cards
  8. Giving some random app developer access to your camera and microphone on your phone to use their stupid app
  9. Sleeping at home alone in complete darkness
  10. Watching drunk people leave a bar and hoping they're being responsible and taking a cab/Uber
  11. Please please please add to this list
  12. Bugs are everywhere all the time.
    Suggested by @strachable
  13. Valet parking
    Suggested by @ChrisK
  14. Driving
    Suggested by @arandallm
  15. Letting a student doctor give you medical care
    Suggested by @ChrisK