Years ago I tore open my arm at work down to the bone (cut sheet metal corners are sharp!), while it was been stitched up at the hospital I was fascinated and watching closely to the point the nurse commented that most people would look away.
I'm somehow in both - I'm interested, think I'd like to watch; but don't out of fear that maybe I would faint or whatever and find that embarrassing! (Which I probably shouldn't, don't mean to say that anyone who does should, etc.)
The frustrating part is, I definitely faint due to blood being drawn for example, but something about the sight of the procedure makes it hard to look away
Funny how different people are I guess.