People don't need cryptography everywhere. Where they need it, they should be willing to spend ten minutes. Where they don't need it, such as coupon mailing lists, they go with the flow.

The only way to have 100% encrypted email is to avoid a massive number of services. This is something to be done only when it actually provides safety.

Basically you're arguing a point (100% crypto) that is completely different from the post you're replying to (crypto on critical conversations).