Death and after that:

If there is only one thing certain about life, it is that it ends. This truism instinctively raises a question which preoccupies most people at least once in their life: What lies beyond death?
At the physiological level, the journey that the deceased takes is plain for all to witness.
If left alone to natural causes, the heart will stop beating, the lungs will stop breathing, and the body’s cells will be starved of blood and oxygen.
As for the journey of the soul after death, then this is not something that can be witnessed, nor can it be gauged through scientific enquiry. Even in a living body, the conscious, or soul, of a person cannot be subjected to empirical experimentation. It is simply beyond human control. In this regard, the concept of a Hereafter - a life beyond death, resurrection, and a Day of Reckoning; not to mention the existence of a Divine, Omnipotent Creator, His angels, destiny, and so on - comes under the subject of belief in the unseen.
The only way in which man can come to know anything of the unseen world is through divine revelation.
“And with God are the keys of the unseen, none knows them but He. And He knows whatever there is in (or on) the earth and in the sea; not a leaf falls, but He knows it. There is not a grain in the darkness of the earth, nor anything fresh or dry, but is written in a Clear Record.” (Quran 6:59)
While what has come down to us of the Torah, the Psalms, the Gospel - the scriptures revealed to early prophets - all speak of a Hereafter, it is only through God’s Final Revelation to humanity, the Holy Quran, as revealed to His Final Prophet, Muhammad, that we learn most about the afterlife.
Coupled with the question of what happens after we die, is the question: Why are we here?
For if there is indeed no greater purpose to life (that is, greater than simply living life itself), the question of what happens after death becomes academic, if not pointless. It is only if one first accepts that our intelligent design, our creation, necessitates an intelligence and designer behind it, a Creator who will judge us for what we do, that life on earth carries any significant meaning.



Logic for the hereafter:
If nothing else, a discerning person would be forced to conclude that life on earth is full of injustice, cruelty and oppression; that the law of the jungle, survival of the fittest, is what is paramount; that if one cannot find happiness in this life, whether due to an absence of material comforts, physical love, or other joyous experiences, then life is simply not worth living.
In fact, it is precisely because a person despairs of this worldly life while having little, no, or imperfect faith in an afterlife, that they may commit suicide. After all, what else do the unhappy, unloved and unwanted; the dejected, (desperately) depressed and despairing have to lose?!
“And who despairs of the Mercy of his Lord except those who are astray?” (Quran 15:56)
So can we accept that our death is limited to mere physiological termination, or that life is merely a product of blind, selfish evolution? Surely, there is more to death, and so to life, than this
The Day of Judgment
“That Day, a man shall flee from his brother; from his mother and his father; from his wife and his children. For on that Day, every man will have enough to make him indifferent to others.” (Quran 80:34-37)
“Unquestionably, for the allies of God there will be no fear concerning them, nor will they grieve: those who believed and used to fear God (in this life); for them are good tidings in the worldly life and in the Hereafter. No change is there in the words of God. Indeed in that is the great success.” (Quran 10:62-64)
“So whoever worked even an atom’s weight of good will see (the good fruits of his labor).” (Quran 99:7
Paradise and Hell, which is also not impossible. If God can make the sun, the moon the stars and the earth, why should He not be able to make Paradise and Hell? When He holds His Court and pronounces His judgment rewarding the meritorious and punishing the guilty there must be a place where the meritorious might enjoy their reward honour, happiness and gratification of all kinds and another place where the condemned might feel debasement pain and misery.

The Quranic description of Paradise gives us a vision of just what a fantastic place it is. An eternal home that will fulfill all our wholesome desires, seduce all our senses, grant us everything we could possibly want and much more besides.
“But whoever comes to God as a believer (in His Oneness, etc.) and has done righteous good deeds; for such are the high ranks (in the Hereafter).” (Quran 20:75)
“The Fire: they are exposed to it, morning and afternoon, and on the Day when the Hour will be established (it will be said to the angels): ‘(Now) cause Pharaoh’s people(wrong doers) to enter the severest torment!’” (Quran 40:46)