Earlier quoted context omitted.
That's actually a very unadvisable scheme. By doing this you make yourself a target. If any one of those are compromised, attackers will attempt to try that against a lot of popular sites (including banks). If you have your own domain (which I assume you do based on your scheme), I suggest not doing this. You would be better off coming up with a random account name for each and using a password manager to keep track…
>By doing this you make yourself a target. If any one of those are compromised, attackers will attempt to try that against a lot of popular sites (including banks). And if you use the same email for everything (as is the alternative), attackers can attempt to try that against popular sites. So I don't see the downside of this method?
I actually don't like the idea of using email addresses as user IDs. I believe that was a lazy approach in the first place and this causes too many problems. I'm sure it all started that way because someone wanted your contact info, and since the only way to guarantee a valid email was to make you verify it. It has nothing to do with security.
Nobody said security was easy or convenient.
Anyway, to each his own. I have my own domains and do, unfortunately, have about 100 email addresses/aliases. Yeah, it can be inconvenient to maintain. I originally started using the aliases because I wanted to know who was giving out my email to spammers. I caught a few and stopped doing business with them.