Hm, is there a difference that you can point to between now and the days when porn flowed easily from your fingertips? Or is the inability to pinpoint a change in motivation/atmosphere/character-drive part of the frustration?

filthy, filthy porn
Mmmm, dirty talk. You've now sparked an image of the boys competing with one another verbally during sex, only to be thrown for a loop when Sakura owns them both with her bold, filthy remarks.

Also:
Maybe I need to blackmail myself into writing. Yeah, it's hot
... It is so many levels of wrong that I took "hot" to be a mocking sexual reference to the chosen form that you've chosen to use to inspire yourself. (ie Blackmail = kink-factor, so hot, I know.) *facepalms* The theme of your post apparently led me astray.