Sexual pleasure is the whole point of it, although for some 'people' that is not the case, and in the case of man on man sex reciprocity is a minimum standard, which is why I fuck only with other versatile guys.
Rough sex is fun as long as the sex is the goal and not the rough part. And as far as I am concerned only if it's reciprocated. Otherwise it's nothing but a psychiatric disorder.
While I do love a rough flick, the problem with many of these very eastern flicks (I've seen similar flicks from Poland and the Baltic states as well) is that this is all they know. They literally have no other form of gay porn, most of which is amateur anyway. And versatile action is almost unknown in this part of the world-net. The flick is hot, the onesided 'taste' and homophobic culture that produced it is not.