As long as prostitution is kept illegal, organized criminals, pimps and madams, can take advantage of working ladies of the night, morning and afternoon. Forcing many through subterfuge of false promises made overseas into a sex trade they never expected in their naiveté of hope for a better life. Drug abuse, stds will remain as problems with nothing but despair for those caught in an endless cycle.
Bring the oldest profession into the light, and society can better limit the abuse of underage girls, better limit false immigration and slavery, better limit stds including the spread of HIV, and so forth. Your sense of what is moral and what isn't is severely indicative of self righteousness without honesty. Nothing will make prostitution disappear from reality. No religious persecution, no indictments and jail terms, no public shaming, nothing. Better to place it in a controlled environment, free of abusive pimps and organized crime, the slave trade, and substance abuse. The cheap votes garnered by California and other DA's who shut down Craig's List and Backpage made it tougher for police to identify underage runaway teens, the pimps who turned them to the life, and people like you contribute to the hypocrisy.