Can't say I've ever participated in an incest roleplay but I have had periods where I try to find good incest porn. All over the spectrum, brother/sister, mother/son, Daddy/Daughter. Dad/Son. I too think this is due to the abuse. Hope others have more experience and some advice for you
"Being with people that understand you...Priceless"
"and i don't want the world to see me, cause i don't think that they'd understand"
"You don't know what love is...you just do as your told"
"My life has changed. What you take as a simple thing, is not so simple for me anymore"