It is often said that improvements in medical technology are beneficial to society because our lifespan increases and infants survive more often compared with previous generations. However, I think it is not always good for our society.
The first reason is population growth. Due to the improved medical technology, the population continues to grow. By 2050 it will reach 10 billion. This over population affects the earth adversely. For example, people in developed countries can not afford enough food and die by starvation. Global warming accelerated by the increased human activities destroys natural environments. In the future, our society will experience more and more conflicts because it is required to survive in a tough world.
Second reason is that increasing longevity does not lead to a happy life. Today in developed countries such as Japan and E.U. people can live around 80 years old because advanced medicine and superior surgeons can cure diseases that were fatal. However, some old people are not happy. They are suffering from loneliness and they have to live with a meager pension.
Third reason is that medical technology is really expensive and everyone can not access it. In order to develop the latest medical technology, large investment is needed. So when it comes to practical use, patients have to afford a large investment but poor people cannot.
For the three reasons mentioned above, I can say with confidence that technological development in medical world does not lead to more beneficial society.