I am rarely ever horny. is this normal?

It all started on the night of Christmas Eve. I haven't been masturbating for some time, so I thought I'd go bust a nut. I lurked through all the different types of porn videos ranging from amateur blondes to amateur brunettes. Well, as I was watching the videos..I wasn't really beginning to get horny at all. That wraps up the story. So, the good people of isitnormal.com, is it normal for me to not feel horny under these circumstances?