why is it necessary to do intercourse to produce next individual?
Answers
Answer:
The birds, the bees, chimpanzees, humans – we all do it, but few people realise that sexual reproduction actually first evolved in creatures vastly different to ourselves.
So what were they and how did it all start? What is the real story of the birds and the bees?

What is the real story of the birds and bees? (Credit: Vivien Cumming)
The dawn of sexual reproduction has always been a puzzle for scientists. Today on Earth 99% of multicellular creatures – the big organisms we can see – reproduce sexually. All have their unique mechanisms, but why this process evolved is actually a subject of great mystery.
Even for Darwin, the father of evolution, sex was confusing
Even for Darwin, the father of evolution, sex was confusing. He wrote in 1862: "We do not even in the least know the final cause of sexuality; why new beings should be produced by the union of the two sexual elements. The whole subject is as yet hidden in darkness."
Many species are totally preoccupied by sex and will go to great lengths to gain a mate. The male bowerbird builds elaborate nests to impress females; the female glow-worm's tail burns bright to lure the male; even the perfume produced by a flower is simply a clever trick to attract insects that will pick up pollen and then make a beeline to neighbouring plants, fertilising them in the process.
Answer:
It is not necessary to produce next individual but if you want to produce next individual then you have to do intercourse because it is a natural phenomenon just like eating , drinking water , sleeping etc .....