If we lived 200 years there would be many arguments for and many reasons against.
As far I can see there are many advantages of living 200 years. The first can be that people could earn much money to see as many places and visit as many countries as they want. They could go for example for a trip around the world. The second advantage could be that old people would know the new techniques. For example today our grandparents are “afraid” of mobile phones because they don’t know the latest achievement of technology and they don’t know how it works. But if they would live to age of 200 years I believe that they would know all the newest products. The third advantage could be that people could also have so many parties that in the end of their life they wouldn’t regret that they hadn’t been on some of them.
I, personally, think that there aren’t as many reasons against living 200 years as advantages. The first reason could be that, if people wouldn’t have much money they couldn’t go for a trip around the world, they couldn’t have many parties and they couldn’t buy the newest things in shops. Some people could have very sad life that they wouldn’t like to live 200 years. For example if in a married couple, wife or husband would die the second person would be so sad and depressed that she or he would like to die too.
To sum up, despite the arguments put forward I think that we should live all until we are at least 200 years old.