If not, then it would be unreasonable to believe that it's purpose would be destructive. In fact, as I said in the beginning - I believe our most basic purpose in life is to survive. Thus life, by it's very nature, is set to a course that only leads to progression. On a slightly higher level, our purpose of life is to progress eternally. Life is not confined to this earth, the universe, or mortality.
Life is eternal.
It must be. Some people still believe that man designs our purpose in life, individually and collectively. To a degree, I believe this is true. However, I also believe, like many things, that life can only progress by certain laws that man can't change. The highest purpose of life, of course, is to discover our origins and our maker, our God, and to become like him.