This is essentially my stance as well, except I only ended up creating a gmail account in the first place because you're required to have one for (at the time) Android Market. I'm still running a mail server that I originally set up around 2000. I still have some mail from that far back as well. Although I get a moderate amount of spam the vast majority of it that I get either goes to a known "promiscuous" email address (e.g. git@mydomain) and is funneled to a separate mailbox or doesn't get past the spamassassin that I installed from my distro's package manager. YMMV.
I am in the process of switching to a more robust backend/edge system with postfix, mysql, amavis, dovecot, sieve, and some other bits all managed by modoboa. That project is currently in the prototype stage.