Many people are optimistic of the 21st century and see it as an opportunity to make positive changes to the world

Many people are optimistic of the 21st century and see it as an opportunity to make positive changes to the world To what extent do you share their optimism? What changes would you like to see in the new century?

Change is but natural. Everything undergoes a sea of changes over a period. Many changes are expected in the 21st century. I am an optimistic person and I believe there will be many beneficial changes which I would like to see in the 21st century.  

To begin with many positive changes are expected in the medical field. Our researchers are working day and night to find treatment of various types of cancers and other fatal diseases such as AIDS. Because of advanced diagnostic techniques like MRI and nuclear scan, many diseases can be detected so early that treatment is now possible. Advances are also going on for cell transplant instead of organ transplant. If this becomes true, transplant surgeries will become a thing of the past.  
Furthermore, terrorism and wars will be there only in history books. The whole planet Earth has already shrunk into a global village. National boundaries will disappear completely. We will also have better alternatives to energy sources. Global warming will be dealt with effectively and everyone will have the basic amenities of life.

Finally, illiteracy and poverty will be wiped out. Everyone would be educated and contented and therefore there would be peace, harmony and happiness all around. Holidays in space might be common. Change is imminent in every sphere of human life. What is certain is that those who accept changes, instead of those resisting them, will be more successful.
 
To put it in a nutshell, I pen down saying that all this might sound too optimistic, but I would surely wish to see all these in the 21st century.