Every woman I know who does tech support for survivors of domestic abuse does it because she is a survivor. Every man I know who does this work does it because they've seen someone abused and they were moved to do something about it.
@mdarweesh I recommend starting with some reading about intimate partner abuse and trauma, starting with "Why Does He Do That?" by Lundy Bancroft (with the caveat that boy is it gendered and heteronormative) and "Helping Her Get Free" by Susan Brewster (many of the same caveats apply).