Is it alright to use Porn as a marital aid

I have heard many people quoted as saying that they use porn with their spouse to light the fire in the bedroom.  Porn brings unwanted guests into your bedroom.  When you and your spouse make love, this is a special expression between you two.  Bringing other people in via porn causes feelings of inadequacy – does he or she perform or look better than me?  Will he resent me if I don’t want to act like that porn star?  When you start to emulate the themes that run throughout pornography (the woman is an object of pleasure) will you be honoring your wife or degrading her?  We have imaginations large enough to dream up fun as a couple and we don’t need to bring the negativity of porn into our bedrooms.  You will be more uninhibited when you and your wife are alone.