Intelligence agencies want as many possible vectors for attack as possible. Especially unknown ones that you are not prepared for them to exploit. Everyone is assuming they wouldn't bother with a client backdoor... That right there is enough reason for them to get a client backdoor!
The problem is we need _something_ like government to advocate for, and protect the safety and interests of the people. Something that has teeth. Because without it, we, and our land, and resources, will be raped.
In my university we often had group projects and at the end of the project you scored your team members. If the entire team scored one member highly or poorly, their grade could be weighted higher or lower.
That's why you can use vim in emacs. Since I've been using spacemacs, I don't miss vim anymore. Use the best editor together with the best operating system!
It's the corpse model of product development.