I'm assuming the OP means regulation and not merely childish de-criminalization that doesn't solve anything. I have some doubts about regulating prostitution as a legal activity with labour rights (and duties). In the end, as long as it's possible to tax it to benefit the state, I think I would be all for it. But don't dream too much, state intervention in prostitution would need to be careful and strategically planned. No one wants prices to raise excessively, waving away potential clients and leaving street prostitutes as an easier alternative.
Currently the average age to become a prostitute is 13-14 years old. The average hooker usually has a pimp and 80-90% of them are raped frequently by the former and abused occasionally by clients. I say that if we can profit from this activity while ensuring there is some dignity to sex workers, then we should totally legalize and regulate prostitution.
In this case, I set morally aside. I don't give a crap about sexual morality (a vague concept in itself)
Is there any reasoning at all behind your belief that the opinions of prostitutes ought to be the basis for which policies on prostitution need to be based?
Not the basis, but should certainly be listened to. They are the ones working for the industry after all. You can't talk about a specific issue or proposal without listening to those who are affected.