I had a colonscopy when I was 20 because of complications I was having with my irritable bowel syndrome, and they didn't fully sedate me. As they were doing the procedure I could feel the scope in me and started crying that it hurt. The doctor came in to talk to me about what they saw and found, and she then told me that I would have to be put to sleep in I ever received another because they gave me as much medicine as they legally could. So I understand how you feel about never wanting to have another one done. Other than that my experience with the nurses was fantastic!