They know more about all the trials and troubles of marriage and the depths of the human heart than any one of us . . . a good part of their job is to hear (and forgive) people's most secret sins that they would never tell to anyone save under the absolute seal of the confessional . . .
exactly
sexual/porn problems are generally spiritual problems acted out with perverse use of the body
a real "sexual" problem needs a physician
Bravo Sierra! The only way you can learn about being married, truly, is to be married, or to have been married. Take what you're saying and apply it to the secular world: What you're saying, more or less, could be applied to psychiatrists---they should "know more" about the human condition because people spill their guts to them.
Yet we all know pyschiatrists are often most in need of psychiatry themselves. If you trust a psychiatrist to govern your heart, or give you sound, solid, unbiased advice about what's best for you, let me know---you might be interested in purchasing the deed to the Zakim Bridge from me.