Dude, bible mentions about marraige too. Perhaps you're not
familiar with the bible (not like I'm expecting you), but I would
say it's pretty safe to say that the 'multiply' part is within the
idea of marraige and families.
No offence, but if there's really a flaw, it's with your
understanding. Besides, there really isn't anything wrong with
clubbing/pubbing, the thing is not to get controlled by it.
Hope that clears up your perspective a bit.
Cheers.