I avoid the temptation to do this as I know I would instantly fall into the trap of forever tweaking, never being satisfied and eternally wondering exactly how I "had it set up that last time just before I ruined it."

Luckily, modern receivers are a pain to play with manual EQ settings as it's generally berried in the menus so it helps me avoid the temptation. If I had a completely manual equalizer (sliders) I'm sure I'd be ready for committal by now.

With great power comes Awesome irresponsibility.