There is a solution and that is a challenge response system with a true white list (and a black list too if you really want to totally blackhole someone).  Only approved email will get through and if someone "self-approves" and you don't want to hear from them, you remove them from the approved list.  If they persist - blackhole them.  Yes, these things can cost a little money - some as little as $25/year.  But you never have to see the spam, never.  It is rather blissful.