In most traditional cultures a man had to prove his overall social worth before he could gain access to an attractive woman; in some Native American tribes for example a man wasn't even allowed to court a woman unless he had proven himself in a hunt or a fight.
And this likely benefited the economy as well, since it motivated men to "man up" and do something useful with the hope of getting a wife for his effort.
Today however women often dress immodestly in public and are very easy overall, plus adult entertainment industries provide easy sexual access to anyone willing to pay.
Basically it's sexual affirmative action, now all a man has to do to see an attractive woman is turn on his computer, so it'll likely hurt the economy in a long run when a man is no longer willing to be a man and do productive things.
So ironically if we made women wear burkas in public and eliminated the adult entertainment industry it might actually benefit the economy in the long run; the lazy welfare recipient couldn't just stare at the hottie outside his home or search for free porn online, he'd have to actually do something productive with his life in order to find a woman to bed.
What you are really talking about is sex starvation.
That was actually the way it was years ago. Men married women for the main reason of getting sex. It led to a lot of miserable people. My grandparents were two of those people, but there were many at the time because religion made it difficult to get a divorce and you were the talk of the town.
So because of sex, people led the rest of their lives unhappy and living with a person they couldn't stand in many cases. Economically or otherwise, if you are serious about this subject, I can't see how you would want a society to return back to those days.
