Only reasons I do use AdBlock,
Saves bandwidth, data plans are expensive out here. Also ads that expand/play music or video directly - are annoying.
I don't mind plain and simple ads. AdBlock beta has an option to allow non-intrusive ads, I do keep it on.
Infact it would be great if there were some sort of guidelines (adblock checklist if I may call it so) which marketers can follow and pass adblock if this option is on.
That "white list" already exists and comes ON by default on Firefox's AdBlock.
Reminds me of Kim Dotcom's project of supplying Megauploads' users with an adblocker that injects only his ads. Rumor was if you installed it, you'd get free music.