Marriage for One Dimension, Convenience

An Iranian muslim cleric advocates temporary marriages so men can have their sexual needs "satisfied" without going to prostitutes.

This is remarkable!

What's the women's perspective on these "marriages"?
Why emphasize the temporary, and the sex? I suppose the temporary idea means that the man is conveniently free of real commitments.
Is no one thinking about the longer term consequences of this approach? "Serial monogamy" is a popular catch-phrase in some American circles, but it still can damage people.

Legalistic thinking runs amuck.