Because I automatically assume they have the same mindset as myself: namely that in grieving, they want people to shut up and not murmur the usual cliche condolences that the fifty+ people before them already said.
Yeah, that's why my way of going to a wake is to pay my respects, say hello, and hide in some obscure corner.
Did you see them going off to fight? Children of the barricade that didn't last the night. They were schoolboys, never held a gun, Fighting for a new world that would rise up like the sun. Where's that new world now the fighting's done?