The many causes of pain

As will look on causes of pain we bases on mental pain or psychological pain.mostly  we suffer, and there is the question which it is difficult to answer and that is "Why do we suffer?", because we really suffer due to the various reasons.
in summary I list them below

• We suffer, chiefly and obviously, because we are human. Our physical reality is sensitive, vulnerable, and mortal.we get wounded, sick and also we get old.this sense of suffering is natural.
• We also suffer because we are free that is we can choose even what can make us to suffer and which are risky.
• we suffer due to our weakness that it is capable of causing a lot of harm individually or collectively.
• Paradoxically, we also  suffer because we do not always act with intelligence as we should. many of our problems comes due to our senseless mistake.

• We also suffer because we live in the society and we are victims of decision made by others as the friend needs to get advantage of your weakness or theft or fighting this is all about the decision made by our friend or other people.

But we can not be satisfied with this answers even if it is being proved to scientifically. we still need to look forward toward success. when we feel pain we need to comfort ourselves and not to faint.