A couple of centuries ago, large families were the fashion.Mother wanted to bear as many children-preferably sons - as possible.The reason was economic one; Many hands were needed to work on farms.The more hands one has , the more profitable the farm.There was also another reason for the desirability of large families.The infant mortality rate was rather high and also, not many people lived to ripe old ages as they do today.In many countries the maximum life expectancy was less than thirty years.
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In present times, both the above reasons for large families have been removed.Modern medicine ensures, at least in the more developed countries, that
the infant morality rate is low.Fewer children die and most of them live to become adults.For the adults too the life expectancy is high.With better living conditions and health care, many men and women today live well past sixty years.All this simply means that the population of the world keeps increasing rapidly while the resources keep decreasing all the time.
Scientists warn us repeatedly that there is a time of severe food shortage on the horizon.Food production is increasing very slowly compared to the rapid increase in population.It is feared that there will come a time when there may not be enough food to go round.
The question may be asked if it would be possible to have more food production.Unfortunately this releases another serious problem.To increase food production, farming land has to be increased.This means the destruction of precious forests.To prevent grave environment problems, we have to stop destroying nature.If we do not create more food , then the market forces will cause food prices to rise-perhaps to unrealistic heights.This would mean that less and less food will be available to more and more people.This will unleash another series of the health problems.Countries which have food shortage problems will have to adopt all sorts of means to feed the people.This may include war and return to the cave-dweller days of the survival of the fittest.              
Surely all these problems must be prevented from ever rising.Clearly it would be almost impossible to solve them once they begin to make their effects felt.The most practical way of preventing the problems from ever felt.The most practical way of preventing the problems from ever rising  seems to be population control.Hence population control is essential for the continued survival of the human race
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