I agree that longer human life span causes many problems. Some people may mention that the human life span did not lead directly a lot of problems. However, longer human life span could arouse population explosion. Also longer human life span cause environmental problems.
First of all, longer human life span could arouse population explosion. Hundreds years ago, people who lived in the whole world were less than one billion people. However, today more than six billion men live in the world. Longer human life span was a main factor increasing people. Of course, some people may say that a lot of people who lived in a country help to develop national economy. However, the population explosion causes many problems. A food problem is one of the most severe problems which led to population explosion. A short food supply led to die a lot of people every each year. In fact, many countries did not provide their people with enough food. Naturally, people who lived in the countries suffered from hunger. It means that a lot of people who not control with human capacity aroused severe problems.
Second, longer human life span cause environmental problems. Too many people who lived in the globe need many energy resources. To provide enough food, it is demanded to exploit enormous land. Also it is necessary that many people use a lot of fossil fuels living more convenient. However, too many exploiting lands and using fossil fuels caused environmental problems. A lot of exploiting lands effects negatively to forests. In addition, too many using fossil fuels led to much CO2 production. It made not only greenhouse effect but also air pollution.
In conclusion, I agree that longer human life span causes many problems. It is because longer human life span could arouse population explosion. Also longer human life span cause environmental problems.
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