Cycle of abuse

[qzee.livejournal.com]

I've read one or two stories where John is a survivor of childhood abuse and a few where Rodney is one and am wondering: are their fics where either John or Rodney are terrified of having kids (either by mpreg or adoption) due to their past abuse and fearing they would turn out like their parents? Whether as a theme of the fic or just a scene or even a throw away line, whatever, as long as there is a mention of the fear of becoming an abuser is somewhere in the fic, it'd be good. Thanks for any links.