I wonder how many problems in the middle east would be solved by bringing em' easy access to porn...
Of course the reason they would never do this has something to do with how porn is viewed by mainstream folks and how an aghast media would present this even if it was an actual practical solution to a problem. Would seem to be worth a try.
Also, porn is known to be capable of messing up marriages, so I guess it will certainly not solve any problems related to normal family life (which is what we want these men to pursue), and the morals that come with it.
Also, porn is known to be capable of messing up marriages
the morals that come with it
Another counterargument to your claim is that porn can provide an alternative to infidelity, which tends to mess up marriages to a greater extent.
Further, some of those societies already have many of these problems, such as objectifying women (which they do to a greater extent such as requiring them to cover their entire bodies), as a direct result of the culture being so closed in terms of sex.
Also, regardless of the "marriage" argument I made, if these men had normal relationships with women, I think the problems would be much less severe. Porn is working against that, not helping it.
Ref: Full Metal Jacket (link is a nsfw video):
Sorry, this hasn't seemed to solve it.