Femdom Fetishes and therapies

I thought I would never be attracted to Femdom. I had a healthy sex life...I thought...I then developed an addiction to porn and going deeper into it discovered a desire for Femdom...which I found super strange. I actually realized later I became a switcher. I still wanted to go deeper and find causes which I then found in form of abuse I experienced through my brother. Not in form of sex but verbally always. I realized that I seek the same feelings I have hidden in me in this type of porn. I had a very good therapist. She could lead me to this correlation. With getting more control over Pmo and therapies and realizations this pattern disappeared. Since I found this I am convinced that many fetishes are linked to some kind of hidden issue. I am not condemning them. Rather find it interesting and think in the future this could be a vital part of pshychoteepies and massages to get to roots of things