Being able to see my own deaths allows me to compare myself to my past self, seeing if I improve or not. If I only see kills, I can see that I'm gaining more kills, but I can not relate that to anything of value. If I see deaths as well, I can figure out how many kills per life I'm getting, which I can compare to the same value over time to see if I'm getting better (or worse) if I care about it.
I had that option before, it was taken away from me. I want it back.
There, I played your game. Now please stop posting baity posts, it's annoying. You don't need to play devils advocate every chance you get - at least I hope that's what you're trying to do and not your actual thoughts.