Re: Why ?
I find that most of the "exclusive content" that providers describe as "exclusive content" tends to be shit. Either the content itself is inane or it's delivered in the most obnoxious means necessary (i.e. a fifty-slide clickthrough with ads occupying 75% of the page, or a video recorded by shrill, vapid people).
Regarding mobile browsing, the experience has become much worse over the last year or two with ad services that redirect to App Store or Google Play, ads that cover the whole page with a four pixel close button, delayed-launch ads, and the sheer amount of noise (ads and related traffic) compared to signal (the stuff I actually wanted to see). It's enough to make me unplug. Especially as nearly everyone on mobile pays for data in terms of X currency for Y data quantity, adblocking is a great way to reclaim a useful mobile web. And get one's money's worth.