I was terrified, broke, no job, with two very small children and had to leave an highly abusive situation or I would be another sorry statistic for women killed by their SO's.
You can leave but it will be very tough to do. Please find a women's shelter in your area and ask for help and advice. They were a Godsend to me when I really needed help. I think of you frequently as I uderstand what you are dealing with. Please get out for your sake and for the kids. They do not need to be around this man, especially if he is abusing porn as he is. He may begin to abuse the kids as an extension of the porn and that will be horrible to deal with. Please get out.