Do your husbands or boyfriends watch porn on a weekly basis?

 I'm 6 months pregnant And have been with my fiancé for 2 years, and last night we were talking and I just found out he watches porn on a weekly basis, he says it's because he likes to and it's a thrill for him. He said it has nothing to do with me.. but I'm still hurt about it, why am I barely finding out two years into the relationship? I think I'm attractive so why would he need that? I understand that 90% of guys do it, but that doesn't make it right!