Fascinating stuff! Who can say what 'our' predecessors got up to....It is well known that the priests of Atlantis practiced mind control black magic, but apparently they also managed to pervert the powers of crystal energy to make powerful weapons.
Various cataclysms have befallen the earth through history. The civilisations that were swept asunder in their wake may well have been far advanced than our own in terms of certain technologies.
All this talk of religion, but it's how you live your life that is the all-important thing.
If you set out each day to do all the goodness and kindness that you can, and to do no harm to man or beast, then you are walking the highest path.
And when your time is up, if you can leave the earth a better place than you found it, then yours will have been a life well lived.