I miss the bindings, too, when using applications that don't support them. In those situations (and other situations beyond simple key assignment), I reach for the extensibility to modify the system...and find nothing that compares.

I'm curious, what do you like about the Emacs key bindings? Is it the GNU system integration, like with Bash?

At some level the keybindings are arbitrary. Some were designated before the contemporary keyboard existed. Of course, they may fit you better just because and that's great.