Prostitution is a victimless crime, sexual exploitation of children is not.
I don't agree. But I do think that abusing children is much worse than prostitution in general.
I think that most prostitutes were abused as children.
Two people may consent to commit evil acts, but that doesn't mean that the acts are moral, nor does it mean that these people aren't harmed, nor does it mean that society isn't harmed, nor does it mean that these evils should be legalized.