The OP made me think of this.
I would say that you should stop blaming porn for your anxiety problems, but after reading a lot of posts on various man-having-issues sites, it seems some guys have a hard time managing their extreme porn consumption. All good things in moderation, my man. If you're only capable of being aroused by plastic-titted redheads getting reamed in the alternate love canal by a veiny forearm of a phallus, of course normal arousal is going to be an issue.
Do you get turned on by the women in the Sears catalog's lingerie section? If not, you may have a problem with gonzo porn.