Every one is in existence as a result of The free gift of procreation— sexual intercourse. It's an act of inserting male reproductive organ (pennies) usually when erect into female reproductive organ (vagina) also known coitus or copulation according to Wikipedia.
During the act, most men don't have the patient to take a lady to her at most height. This is because, his mind is now occupied by the feeling "I need to insert" the blood pressure has risen up to or around........ at this time, according to research, "gold digger ladies" do not take the chance on a plastic plate. They see this as an opportunity to ask of their desire. The man due to his heightened pressure, agree with no second thought. The study shows that the scarm is much great on men who don't prepare woman enough.
Women on the other side, when prepared enough, this is when they are wet enough and the vagina is ready for penetration, they think too slow and gives up on everything until they have got that warm and hard screw. At this moment, they don't even care of STD or even pregnancy, all they care about is that hard screw getting inside the lubricated vagina. The study show that this is when men take advantage and have that bare sex I mean sex without condom. The ladies who get aroused much faster follow to be the prey.
In the brains there are nerves that are connected to sex organs. This nerves are responsible for the excitements during orgasm. Orgasm can not be voluntary due to chemical combination known as the limbic system. Which keep you alive and producing.