> I typically use throw away email addresses instead since they're free. If I actually want to use the service/account some day I'll sign up properly.

The example above is about giving a direct line to be contacted through email on a personal site or blog, heck even a professional one.

> I expect someday the primary email providers will generate aliases on demand.

I know at least ProtonMail does it. But also theres the email#[email protected] trick that works nicely enough.