You've got a logical mind. let's do an experiment, just dive deep into the universe and try to find the edge and analyze the creation.. you will immediately die out of astonishment for who has created this "end-less" patterns of mass and energy and how and why.. what is the source of all this creation.. who "created" the physical laws, that our legendary scientists Newton/Einstein have just discovered.. Unfortunately, the one who discovered these physical laws are getting celebrated/worshiped more than the one who created it :'(
The universe is eternal and we are living in the lap of truth and eternity.. We almost know how our mother Earth came into existence, and it shall vanish too in the vast cosmos one day, but what is beyond that? what is the both ends of time? is there any beginning or the end of time?? if YES, who is responsible for all these?? if NO, how is this all possible at all??
if your thought have come this far, it's time for you to look inwards. your body itself is a complete universe.. just pay a little attention.. The answer for "everything" is within you.. just create a distance |<....>| between your mind and your body.. be little non-physical.. because you are not the body nor the mind..
The medical science can only stretch your life-span but they can not save you from the death which is inevitable.. Realizing all this will lead you towards the path of enlightenment. In hindi, we say "Mukti"! Know the basis of your existence!!