What's your view on extra-marriage love?Their marriage has broken up.

What's your view on extra-marriage love?Their marriage has broken up.
What's your view on extra-marriage love?
Their marriage has broken up.

What's your view on extra-marriage love?Their marriage has broken up.
The strongest aversion to legalization of prostitution is on moral grounds. Essentially, this is more of a moral question than that of economics or even safety. As has been pointed out, legalization would allow regulation and taxation, making the practice both safer and profitable for local governments.
From a moral standpoint, it really depends on what morals a person holds. The general 'standard' seems to be that sex should be confined to two people, or at least it should appear that way to the public eye rather it is really followed or not. A large number of Americans claim to follow a moral code like that prescribed in a Judeo-Christian system, which leads to considering the 'moral fabric' of our society. So, if free sex (meaning readily available, not gratis) is allowed, then the idea of holding sex as something sacred is tossed out of the window. Once we have disposed of one Judeo-Chrisitan value, the rest of the morals advocated by such faiths are open targets. Eventually, there is no such thing as right or wrong, which some might argue is the way things ought to be since the very idea of right or wrong is subjective.
The one problem I see is that as socio-religious "rights and wrongs" are proven irrelevant, we are one step closer to finding government imposed laws as irrelevant to our daily lives since our own decisions are based on our own situation and not anyone else. Of course, this is mostly hypothetical as no society has ever reached such a point, but it does present an interesting debate.
Other than this potential damage to society that might eventually come from such a legalization, I see no problem.