Examples are musky perfumes, the flesh-like qualities of raw oysters, the alluring ambiance created by candlelight and soft music, even the more obvious erotically arousing stimulants of lingerie or pornography. There are as many cues and preferences in sexual arousal as there are individuals. These irritants had the drawback of creating more of a desire for relief than for pleasure and they were often accompanied by disagreeable side effects. Modern science has just begun to understand the physical mechanisms of sexual desire and arousal in humans. No doubt much of what produces and controls sexual drive, it has been discovered, is the interplay of hormones within the body, particularly the sex hormones of males and females.
Sexual libido is a very complicated affair.
Human behavior demonstrates, that after the most basic needs of air, sleep, drink, food and shelter, humans are primarily motivated by sexual energy . This channeling of sexual energy has been called sublimation, but whatever you call it, people want to feel alive, vital and active as well as attractive to themselves and others.