In July 6, 1999 issue of Time International, we are informed that the World Health Organization (WHO) estimates that 100 million acts of human sexual intercourse occur each day but that only 910,000 of them result in conception. The rest are simply wasted.

Thus more than 99 million acts of intercourse are squandered and have no practical results except momentary pleasure for the participants.

If one takes into account the volume of the lost sperm, assuming at least 5ml per act of intercourse, we may calculate that about: 5 x 10E-3 x 99 x 10E6 or 500 cubic meters of fertile fluid are wasted per day.

This brings the number to 15,000 cubic meters per month!
Assuming that the need for irrigation of an acre or agricultural land in arid areas is about 40 cubic meters per acre per month, we find that the available volume of sperm would be sufficient to irrigate, as well as fertilize, about 350 acres of land.

In addition, the squandered acts of intercourse require energy that may be calculated to be equivalent to about 300 kcal. per act of intercourse. Thus the redundant energy, if properly harnessed, would be sufficient to operate a power station and to supply 500 MW/day, enough for a city, the size of New York.
These energy calculations can be made more assessable to the layperson. Let us say that the starter motor in your car has a power requirement of 500W. Thus the Energy wasted on non-productive acts of intercourse would be sufficient to start three million cars.

If you cannot start your car on a cold morning in winter, think of your neighbours, having wasted all that energy the night before, enjoying themselves with their partners.