Giving Up on PGP - Schneier on Security
«[..]Filippo Valsorda wrote an excellent essay on why he's giving up on PGP. I have long believed PGP to be more trouble than it is worth. It's hard to use correctly, and easy to get wrong. More generally, e-mail is inherently difficult to secure because of all the different things we ask of it and use it for.[..]»
https://www.schneier.com/blog/archives/2016/12/giving_up_on_pg.html