So according to you man and woman cannot have sex for pleasure. They must only have sex to create babies?? I would advise you to wake up and smell the coffee.
Look around and you will find that the generally when people have sex they have it for pleasure. Also man and woman can have oral sex or anal sex which cannot produce babies so God will punish people who do that too? If your argument is true none of us must be using condoms because God will punish us for that too!!