the great virtue of ignore lists is that you avoid reading stuff that is depressing, or unpleasant. Of course there are those mischievous souls (you know who you are, theclaud) who quote the ignorees, but the quoted post becomes a kind of in-joke, and doesn't offend me in the way the original might have.
I like that arbitrary make-up of my ignore list. There are people on there I cannot recall. The thing becomes a kind of game. Who is Maverick? What might he or she be writing? Equally there are a couple of people I've met and didn't like - and their inclusion on the list has nothing to do with anything they've ever posted here.
The whole point is this. When I switch on Cycle Chat I want to be enlightened or charmed. I quite like to ponder points of view remote from my own, but I've no desire at all to read stuff that convinces me that humanity is going to hell in a hand-cart.