I'm weirdly desensitized to things
What sort of things are you desensitized to?
Like when I see a dead body, I don't even notice it
It is ok to not be sensitive to everything. Everyone has a different personality you should not try to force other peoples ideology on yourself.
I guess I'll have to start noticing dead body then.
No, there's nothing wrong with you being a little desensitized to things. As long as it doesn't hurt your life in any way.