The urgency to mate persists in all people as in all other mammals because of the evolutionary drive to continue the species, the inborn imperative for genes to reproduce and hormonal differences that evolved over millions of years.
However, further research has shown that it is the normal condition for humans and for most other mammals. It seems pretty clear why this is the case for most mammals and for most human beings.
I've become sort of an accidental advocate for attachment parenting, which is a style of parenting that... basically, the way mammals parent and the way people have parented for pretty much all of human history except the last 200 years or so.
Mammals are sentient beings that want to live and are afraid to die. Evolution vouchsafed us all with an instinct to survive, reproduce and flourish.
We may have charted all the continents on the planet, and we may have discovered all the mammals, but that doesn't mean that there's nothing left to explore on Earth.
I have mild albinism, which means I am very sensitive to light, so the animal representation of my spirit would have to be a mole. I am particularly fond of that most Lovecraftian of mammals, the star-nosed mole, and tend to choose it for online icons and avatars.
The industrial way we fish for seafood is harming the marine habitats that all ocean life depends upon. Indiscriminate commercial fishing practices that include miles of driftnets, long lines with thousands of lethal hooks and bottom trawls are ruining ocean ecosystems by killing non-seafood species, including sea turtles and marine mammals.