This is naive. I think every response sees where you are coming from. And some make sound arguments about why all work isn't prostitution. I will take another approach. Be scientific about it. Test it.
If you already have a job, then you know what that feels like. So now, you need to know what it is like to let someone fuck you for money. So in order to do that, you would need to go out and do it. If you are a guy, you will find it is much easier to be a gay prostitute. Just a note. And remember, it is only for money and business is business.