This visible world is like a mystery. There are many people who have decided the goal or purpose of their life, every one is running behind pleasure that may be materialistic or related to mental peace and spiritualism. But now is the time to think that what should be the purpose of life.  Purpose of life is to live purposeful life. But what is purposeful life? For those who are religious, religious life is purposeful life. For those who believe in universal religion and universal God , spiritual life as purposeful life.
In Christianity it has been defined that this world is temporary. All pains, pleasures and worldly purpose in this world are temporary. This world is going to end and thereafter God will create a new world, which will be permanent. All those living will die. Those living for Christ will find place in the new world and will live forever. Thus for them purpose of life is to find place in new permanent world.

In Hindu religion one of the four purpose of life is Moksha, i.e. freedom from cycle of life and death itself.
According to some scholar of philosophy this world is an illusion. For them reality is nothing and nothing is reality. Along with the world, the life, and 'purpose of life' are illusory. When they go through personal tragedies, sometimes even hardcore illusionist's mind may be taken over by emotions and illusory world may appear to be too real to be unreal.
Purpose of life may also keep on changing as we move on in life. For some it changes from worldly to out worldly, for others it may remain worldly throughout the life. Those who are neither aware of any out worldly purpose nor have any significant worldly purpose left to be achieved, life becomes purposeless.
Some people find it difficult to admit that life could also be purposeless. According to them, since God has created life, it can't be purposeless, especially if it is human life.
There are millions and millions who are not able to manage basic necessities of life such as food and shelter. Can they think of any purpose in life? For them is there purpose in living or living is the only purpose? Is the need for purpose is a higher need after basic needs have been met with?
What are the options if to you your life seems to be purposeless? If you find your life purposeless, most probably you are either atheist or agnostic. In that case to you the life of every body else also may also seem to be purposeless. You may take solace in the fact that you are not alone in going through a purposeless life.

Even the life of those living apparently purposeful life may appear to you as purposeless as you find their purposes purposeless. To you perhaps life is nothing more than a chemical process. You do not worry about after life. To you life is like an onion. Peel it off layer by layer at the end You find nothing or life is like a broken pencil, it is pointless. Here one question can be raised that if there is no need to worry about after life then no one should apery ethical values and norms of life. No, If you need to lead happy life then you have to follow some rules and regulations decided by Society in which you are surviving.