> When I receive a GPG encrypted email from a stranger, though, I immediately get the feeling that I don’t want to read it.

I don't understand why. Did I glance over it, or is it not in the article?

When I receive GPG encrypted email, I only have to enter my password and it gets decrypted. Simple as that. Same as when starting me email client, then too I have to enter a password to decrypt the login for the server. It takes only a moment really.

I don't receive that much email from strangers anyway, but the times I get GPG encrypted email from a stranger it's never spam, so it's surely worth the approximately three seconds to enter that password.

(For the curious, I use Thunderbird with Enigmail and kgpg as front-end to GnuPG.)