What happens when you see too much death?

I was 5 years old when I cremated my father according to Hindu rituals. I remember it clearly. And after that, something died in me. I have seen death after death since then in my family and friends. But I have never shed tears after what I experienced with my dad. I think I don't feel as much as I should. People say that I am strong minded to not flinch at the sight of blood or death but even that's not true. I just feel disconnected from feelings. But after 26 years, I still have nightmares about the smell, sound and the sight of cremation of that day! I feel like I will never be able to feel anything worse than that.
What happens when you see too much death?
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