From a practical standpoint, I don't care. Leeching can't be stopped and any web business obviously has to understand that. Clearly, businesses are able to be built despite leechers.
What I find incredible is that ads are really that much of a nuisance for people. I've never had the slightest difficulty completely tuning out any manner of ad. I sometimes get the feeling that folks who go out of their way to ad block are actually a little bit offended by banner ads in general. And that makes me think they're a little bit creepy. In real life, no one would repeatedly take favors from someone and not feel a certain obligation.
What I find even more incredible is the pure, uniform rationalization that comes from communities that otherwise pride themselves on their logic. Would you take a cookie from one of those cardboard vendors some office buildings have and not pay? "If they didn't want me to eat their cookies, they should have stopped me from taking one."
It's just that the "crime" is so trifling and anonymous. No single raindrop blames itself for the flood.
Like I said, I don't care about ad blocking per se. It's the collective and willful rationalization that irritates me.
(Incidentally, your edits imply that you would be willing to automaticaly be blocked from sites that serve ads. That's nice, and makes you consistent, but the vast, vast majority of ad blockers would not be willing to live with an Internet hamstrung to that extent.)