Perhaps one justification for blocking ads is protecting users from personal information harvesting, tracking, and malware delivered through advertising network

Perhaps one justification for blocking ads is protecting users from personal information harvesting, tracking, and malware delivered through advertising networks. Aside from that, I can't think of a justification. I actually think it would be good if there were filter lists that whitelisted ads that were not harmful to users in those ways, but that sounds difficult/impossible to fairly maintain, and I doubt anyone else wants it.