There's a theoretical answer to that: now, not to speak for NRFB here, but in many cases; people who develop h-games already have depress/are psychological unwell. The signs just simply aren't that strong. With that in mind, many developers and others, also typically go to this kind of media as an outlet. Unfortunately, too much consumption of pornography has been proven to not only be unhealthy, but has similar affects to that of alcohol/drug abuse. To which, when the high of such media is no longer provided at the same level: the return to such previous states come back stronger than they were.