Should prostitution be legalized?

A very typical argument for legalization of sex trade from typical liberals goes like: Since the government is unable to provide work or resources to these women and they chose to trade sex for money and hence becoming independent, What wrong will legalizing trade would do? Besides legalizing trade would perhaps result in safety of prostitutes rather than heckles from pimps, Respect to these human beings and probably education to their children, Medical help etc etc

Everything seems fine with this argument except the starting assumption, Why shouldn't government come forward to help these women do a job that they feel honorable? A prostitute certainly doesn't find her job respectable perhaps because society doesn't think so.

Are these women not capable of doing anything but trading their body?
Are liberals not calling these women incapable of doing anything but trading their body? Can't our government(Owner of a emerging market, World's emerging power) spend a billion or so to get these women do a clerical, tailoring, or sales personal job?

Morality is a relative term, for some, it's very important and for some others, it isn't. So, saying that support morality isn't really correct but to say that GIVE THEM CHANCE, SO THAT THEY CHOSE WHAT THEY FEEL HONORABLE is absolutely correct, Making sex trade legal will never make this business honorable, however oldest it may be, and so would never liberate these women, would never give respect to these women. Albeit they might feel safer from pimps, education to their kids merely because of their social status could still be a farther dream.