I expect yoiu';ll be able to turn down invites to sleep with someone so... umm.. turn em down?
That is not enough. You shouldn't even be asked. Imagine a workplace environment where people felt free to hit on their colleagues. That would be awful. Having unwelcome advances made standard in a game is really not acceptable in today's society given the difficulties we are seeing with sexual harassment. Having a toggle doesn't remove anyone's fun and benefits everyone.