Why should people not run their own email server? It's not like email is moving fast, so it's mostly set and forget. Automatic security updates are a thing, so

Why should people not run their own email server? It's not like email is moving fast, so it's mostly set and forget. Automatic security updates are a thing, so it really is a non-issue. There sure are things that require quite a bit of maintenance, but personal e-mail servers is definitely in the other end of that spectrum.