I used to think the cause of this was something about how you were raised or how repugnant any discussion of bodily fluids or medical stuff was in your childhood. Some of my friends can't handle talking about any medical procedure at all, which I always thought was odd, but I chalked it up to childhood experiences. I've since learned that child rearing is not the cause, although I'm sure it has some influence.
My mom was a nurse, and we talked about all sorts of bodily fluids, medical issues, and, frankly, gross stuff while growing up. I developed a full tolerance for it. Similar to you, it just felt like a step on the way to treatment and healing. It does not bother me at all to see it or hear a discussion about it at the dinner table, no matter how gross. But, my brother, who was raised in the exact same circumstances, passes out when he gets stuck with a needle. Every. Time. I know that the response to needles and blood aren't the same as medical procedures, but my point is that people react differently no matter their upbringing.
Clearly, some people are just made to react that way in emergencies. This is not throwing even a drop of shade at people who have to experience that queasiness, but I'm very grateful that I'm not one of those people. We just react differently.
Also, I 1000% respect people who work in emergency services. I don't know if you still do it, but you guys have to deal with a lot of horrific injuries and people at the worst moments of their life. You're absolutely essential, and I don't think you get the recognition you deserve. <3
I've never seen a truer post.