I don't think it is right for a state to bait people into committing crimes.

Not that I'd ever defend sex offenders, but by creating an opportunity that is strong enough you could get anyone to commit some kind of crime.

That doesn't have to be a sex offense, it could also be tax evasion, prostitution, gambling, illegal file sharing (music/films), hate speech, speeding with a car or consuming illegal drugs.

Most people have some weakness that could be exploited.