Well, I am surprised you have come to such a materialistic conclusion after studying Hinduism! You may believe as you wish, but if you ever run into any real past life phenomena, I hope you recognize it for what it is! I see the idea that Spirit is the ultimate cause of all physical phenomena as much simpler than the circular idea that biology – obviously a created technology – somehow manifests the knowledge necessary to create itself! Past life recall, at least, has been studied in academia and I think the results are convincing. Of course, many others have looked into this phenomenon, too – as it is quite real – and arrived, usually, at similar conclusions. Furthermore, those conclusions are useful, as they have led to workable mental and spiritual therapies, even a solution to the problem of psychopathy.