This is like the employer I used to work with who said "well google has been hacked so therefore us storing passwords in plaintext is okay". Maybe I'm toast if the NSA takes an interest, but there are an awful lot of bad actors out there without the level of funding or resources of the NSA. Of course I'll never be "100% secure", but making it as impossible, or at least as difficult as possible, for someone in Russia to socially engineer their way into my email is worth spending time and money on.