Things that I don't know and grateful that I don't:

1. No toilet nor bowel related comment here
2. The Klingon language besides the word K'pla
3. Any of the plot line for Desperate Housewives
4. American Idol
5. A great deal about current popular culture
6. Extreme poverty - sleeping in the streets, subsisting on throw aways
7. The pain of childbirth. My tubes are tied.
8. What a broken bone feels like
9. How to use profanity in languages other than English
10. Intense loneliness
11. Suicidal depression
12. What it is like to face imminent death
13. Soul destroying hatred - the kind of hatred that overtakes every facet of life. For example, Fred Phelps and his "church's" hatred for homosexuals. Google him and puke.
14. A really good joke to end this list - I'm not grateful for that.