Why are women against porn

Why are so many women against porn?? I see so many post about these women pissed and hurt over the fact their man watches and jacks off to porn. Like wtf? Most people enjoy porn. I never knew so many women "ban" their man from watching even tho I'm pretty sure he was watching it way before they got together. Like how you gonna tell someone how to enjoy their self love time. That ish blows my mind. Ladies feel free to comment. We don't have to agree all perspectives are welcome.