I'm not sure whether or not this was supposed to be a joke post, but I recently had a colonoscopy, and everyone was super nice and fully aware that this was an embarrassing procedure, so they did their best to make it as pleasant as you can be in a surgical waiting area.
I felt myself falling asleep, then seemingly immediately blink awake. I said, "Doc, I don't think the anesthesia is working," and he said, "Ha, no man, we're done."
Like you said, the prep was the worst part. There is no joy in daily living without food.
I woke up in the middle of mine, got to watch the second half. Was interesting, but it probably helps to still be under the after effects ify the anyways.
But definitely, there prep is worse than the actual procedure.
Mine too! Then i said, "It wasn't that bad. I can't believe i stressed over it for so long," and he said, "Yep! You should have come in 32 years ago." And that was the most uncomfortable part of it.
I work in Radiology, and have to do Barium enemas, frequently. As much as we love the humor, we strive to keep it medical, with patients. We all know it sucks, can feel embarrassing, etc, but we're just trying to get the job done with the best pictures. Your physical body is kind of secondary to what our goal is.