Some people think that using animals for experimentation purpose is cruel but other people think that is necessary for the development of science Discuss both views and give your opinion

Animal experimentation has been a debated issue for many decades. Some people believe that scientists‘ locking up animals in a laboratory environment is not what nature intended – and they are probably right. Others believe laboratory animals perform a great service for humankind.
For many years now, scientists have been working hard to develop cures for diseases. From time to time, new medicines and drugs are created which may be a solution to a serious illness affecting mankind. In order to determine if there is any level of danger in these drugs, these are first tested on animals. For example, who has not heard of the Thalidomide case? In 1952, a drug was used for vomiting of pregnancy. Obviously, it was not tested properly. All the children born had seal-like limbs. By the time it was known that thalidomide was responsible, it was too late and much harm had been done.
Another reason for justification of animal experimentation is that the life span of guinea pigs used for experimentation is very small, only 3-4 years and so the effect of drugs can be tested over generations. Even if humans volunteered for testing, it would not help to test whether the effect passed from one generation to the other.
The arguments against animal experimentation are that animals are also sentient beings and we have no right to exploit them for our selfish motives. Secondly, they are very different from humans and so what is tested on animals cannot be applied to humans. Finally, unnecessary experiments are done just for new cosmetics which are not even needed, which is bad.
To put it in a nutshell, I pen down saying that animals are not humans. Although the life of animals in a lab is regrettable, I much prefer a guinea pig to die than a human being. The human need must always come first. It is sad that any living thing must suffer but the use of laboratory animals in testing new products made today goes a long way toward helping humankind enjoy a better tomorrow.