Whoa, #TIL that Phil Zimmermann, creator of #PGP (and one of inspirations of my handle, btw), made a Reddit AMA just a few days ago:
https://teddit.net/r/IAmA/comments/x3b3gj/im_phil_zimmermann_and_i_created_pgp_the_most/
Some very interesting insights there. I like this one:
"PGP was designed for the audience at that time, which was a population of power users - everyone who used email in 1991 was by definition a power user."
There you have it: PGP is user-friendly... depending on who you call the user!