http://www.techtimes.com/articles/91362/20151003/ios-ad-blockers-help-you-browse-faster-and-save-money-nyt-study-finds.htm
As it turns out, ad blockers not only allow users to surf the web without distractions, but also enable them to browse much faster and conserve their data. In turn, this translates to saving both time and money.
Whether iOS or any other platform, I agree completely but would add that ad blockers can actually keep users safe from malicious ads.