Selling your health, youth, time, etc. is fine in your opinion, but selling sex isn’t for some reason?
You honestly think that selling your time to make money is the same as selling your BODY to make money? Please tell me your not serious about that. There are barter systems where people exchange their labor for goods without any money involved, but I think you'd be hard pressed to find a system where people sell their body for goods on regular basis.
So exactly how does one provide for one's need for food clothing and shelter if they DONT want to sell their time? Live in the woods and forage for berries?