If we define sex as coitus, then we surely do not think of it that often. Who thinks about intercourse when they talk to their boss or change the diapers on their kid?

What we might be constantly reminded of are our needs. Sex is a need as basic as hunger or thirst. Our bodies crave to reproduce, same as other animals. But we know very well that reproduction is only the trigger for that chemical reaction in the brain, and what we truly seek is intimacy.

Sex is not only a reproduction function. It holds social, spiritual and emotional weight that impacts us in different ways. Sex can be soothing - taking us to a place where we feel safe and accepted. Sex can be invigorating - filling us with inspiration and passion and confidence. And of course - it feels really good (when done right). So it's no wonder we crave this unique and intensely intimate experience more than anything else.

An interesting question I often wonder about (and read potential answers to): What do asexuals think of instead? A small percentage of humans are asexual by nature, and some due to physical changes or even chemical interference. How do they strive to satisfy that needs for acceptance, intimacy and safety?