The Amygdala is the part of the brain that controls appetite and sex drive. It also helps process memory and emotional reactions. It's part of the limbic system.
The limbic system, specifically the hypothalamus and amygdala, plays a key role in regulating emotions and drives such as rage, pleasure, hunger, and sex. These structures are involved in processing and integrating emotional and physiological responses, influencing behaviors related to survival and reproduction.
hypothalamus
The life drive: libido, survival, propagation, hunger, thirst, sex.
The life drive (libido, survival, propagation, hunger, thirst, sex) and the death drive.
Psychologists tell us that the three most basic human drives are Sex, Fear and Hunger. Fear protects us, Hunger fuels us, and Sex is absolutely necessary for human reproduction, of course, so we humans are programmed -- especially us males -- to seek it out at every opportunity.
Because we all have different sex drives. Just as men have different sex drives.
It is one of the three most powerful human drives (the others being fear and hunger). Of the three most powerful drives, it's the one we talk intelligently about the least. There are basically two views of sex: that it's an ugly necessity, and evidence of our distance from God; or that is a gift from God mean to be enjoyed (responsibly, of course).
I would expect that biological wants are the need for food, shelter, water, the need to procreate, love.
Sex
Food, water, shelter, sex, people
Apparently, people having sex.
The Sex chromosomes