Before I start, I'll say this. Everyone is an atheist when they were born. Atheist are those who see the world as it is, instead of what told when they start to grow up and their parents stupidly impart " holy " reasoning to them. If we were to be able to create immortality, we must first get rid society of this thinking. Imagine how much time wasted for praying, moaning some rubbish in a " holy " book can be used as an effort to improve quality of life, technology and of course not excluding immortality.
The reason why religion was created in the first place is because of....
Since humans are such weak creatures, they feel the need to be ruled under a greater being which turns out to be one of their fantasy. Since a majority of humans posses a weak mental will, they are easily swayed into following the majority even thought it is obviously wrong where the minority is correct after science proven SO MANY facts of life. Also, in hoping there is life after death, they follow religion believing that there is life after death.
IN OTHER WORDS, THERE ARE AFRAID OF DEATH AS WELL, IN THEIR HEARTS, THEY WANT IMMORTALITY, THEREFORE LEADING THEIR BELIEF TOWARDS HEAVEN AND HELL. THEY ARE PLAIN HUMANS WHO ARE TRYING TO ESCAPE THE FACTS OF LIFE, NOT BY HARD WORK AND RESEARCH, BUT BY RUNNING AWAY BELIEVING IN SOMETHING WHICH DOESN'T YIELD RESULTS AT ALL.
IT IS BECAUSE OF SCIENTIST AND NOT THIS RELIGION FANATICS THAT THE WORLD IS WHAT IT IS NOW.
2. Control and Manipulation
I can easily say whoever is the one who created religion in the first place is an INTJ, easily. In the olden days, emperors, kings, high ranking official uses religion to control their civilians, often referring themselves as a " messenger of god ". Terrorism, thinking blowing themselves up can make them holy, delusional minds clouded by religion. Political control by religion. THEY ARE ALL BRAIN-WASHED, TOTALLY.
I'm too lazy to list anymore points so I'll say this to those who still believe in God,
Since God is said to have created everything, he is omnipotent.
And since he is omnipotent, he is alleged to be able to do anything.
Then I ask you this, can this God create a stone that he himself cannot lift?
If he can, he's not omnipotent, because he can't lift the stone he created.
If he can't, he's not omnipotent either, because he can't created a stone he himself cannot lift.
And so, if there exist a stone that he himself cannot lift, how can it be possible that he is the creator of all? Following this analogy, we can assume that there will someone greater than this " God ". And thus following this analogy, we will be stuck in a never ending lineage of " creators " which is not only pointless, but also ridiculous.