This question may sound kind of stupid . People die as their heart stops or they have stroke or have heart attack or the breathing stops. Sometimes that happens suddenly due to car accident or over period of time due to cancer and other diseases. We have seen cause of death being told by family member as 'old age'. But the question that I am asking is not that, but why do people die at different ages and sometimes we do not even know why the hear stopped or someone dies in sleep. My question is more theological then the simple answer that we give or get.
To answer this question, I have to go back to my other blogs and know about the concept of 3 bodies and consciousness. It may sound like repetition but not really. We have 3 bodies namely the Physical or Gross body also known as STHUL SHARIR. We all know that and I do not need to explain this . Then there is a SUBTLE BODY or also called SUKSHMA SHARIR. The mind and intellect and that also includes feeling and emotions etc. And we also have a CAUSAL BODY also called KARAN SHARIR. So when the physical body dies ,we still have the Subtle body and Causal body. The mind and intellect and feeling and impressions from our actions are stored in the complex of Subtle and Causal bodies . The causal body is called causal body , as it is the CAUSE of other 2 bodies. So, when we die or to specify when the physical body dies , we still have 2 other bodies but the connection is gone. The consciousness is there but without physical body it can not express. We are born with certain karmas coming to fruition. We have done thousands of karmas and each has impression and effects. They have to come to fruition. But all cannot come to fruition when we are born in a particular life. So we are born with CERTAIN KARMAS that need to come to fruition and that is called PRARABDH karma. We continue to do more Karmas called KRIYAMAN KARMA. Some of these Kriyaman Karmas, come to fruition in this life and some will be stored . The stored karmas are called SANCHIT .So our present life is there as long as the effects of our stored Karmas that we are born with and will have effects on this life plus the Karmas that we did in this life that will have effects in this life. Once this stock of karmas are done with the physical body dies as there is no function or work left for 'this body' ,And until we get new physical bodies rest of the karmas cannot come to fruition . .
We will continue to have new physical body as the causal body continue to store effects of our karmas and so we will be born again. The present life is determined by what we have to experience in this lofe. When that is done - we die.