I have terrible teeth. There's a few gone now, and more that should be gone. Maybe 20-24 or so are in decent shape.
The odd thing is that I've rarely experienced pain. By the time the tooth is bad enough to require attention, the nerves have died.
The most unpleasant procedure was the extraction of a molar. The tooth cracked off, leaving roots deep into my jaw. The surgeon had to crack the roots with a pliers. The noise was awful.