Good debate topic Bec. I also think it is good you have clarified that is a debate so no-one misunderstands the intent.

Personally, for me to enter this debate, I think justifiable would become entangled with acceptable and tolerable based on my life experiences. I am not qualified to assess what is justifiable medically in accordance with the symptoms and effects of PTSD. While I try to educate my self some of my views are based on morals and values instilled into me as a child with a dash of life experiences thrown in.

I would also go as far as saying that just because something is justifiable to me does not necessarily mean that I could live with it or would choose to do so.