What are your opinions on SO watching porn?

Everyones views vary differently on their SO watching porn. Just wondering people's views on it. My boyfriend watching ALOT of it and it never really bothered me up to a point. I'd always say it's better then him going out and finding another girl to have relations with but it's become to where we barely even have sex anymore. I feel that it's gotten way out of hand and not sure how to bring it up in a conversation with him. So I have kinda swayed from it's ok to not ok. Your views and opinions on it.