That's because you've got a physical identifier of this concept in your mind. Does the idea of a pacemaker feel bad? Probably not, because your "heart" is an abstract idea--you'll probably never see it with your own eyes. A lot of professors teaching dissection have noted your feelings, girls in general don't have a squeamishness to overcome in testicular dissection since they don't have that externality of organs.

Just reading your comment made me squeamish. Very squeamish.

Wow I never associated squeamishness with physicality/abstractness of the idea. It does seem to hold up!

Me too. I have had to lie down in the past from dizziness just from reading articles that described 'body cuts/surgeries' in that level of detail.

sudonts response below is also noted, and agreed with.