The user already decided, by installing the ad blocker.
Lets compare it to cancer. Maybe the users don't want brain cancer, but they should have the option for skin cancer.
Nobody wants cancer. Users who install adblockers don't want ads.
personally i compare them with housekeeping. I don't like it, i can decide to pay someone to do it, or i've to accept them. Which could kill me by poisonous cleanser (malware).