If you have ever been in the hospital, what was the worst part?

I recently came out of hospital (Tuesday actually) from elective surgery. I had never been to a hospital before for any kind of serious operation and I just wondered if anyone has had bad experiences during recovery or near death? Nothing happened like I did not get to the white light but my lord if you cannot breathe you REALLY freak out! Although I am in Canada so it is free (good side), I almost died as I could not breathe while recovering so I had to yell at the staff to get me breathing (bad side). I just wonder if anyone else has had memorable experiences. I mean I never even KNEW about respiratory services before and now I owe them my life. The surgery itself was fine. I know you ALL missed me lol…just kidding.