Q: I don’t believe we go to Heaven when we die. Instead I believe that we come back to earth (or perhaps go to another planet) and live another life, and we keep coming back until we finally reach perfection. You’re free to believe what you want to, but this is what I believe. — B.K.
A: This process you describe is commonly known as reincarnation and is a belief associated with many religions such as Hinduism and Jainism. As someone who was raised as a Christian and believed in the Christian god for 30+ years, I am not very familiar with these other religions. However, I am fairly confident that they are also based on myth and superstition. There is no rational reason to believe that reincarnation has ever occurred.
Of course, we (Americans and much of the industrialized world) are free to have whatever religious beliefs we want as long as these beliefs do not preclude the rights of others. However, this right does not validate any one’s religious beliefs. Your belief in reincarnation is just as unproven and irrational as the beliefs of Christianity, Islam, Judaism, Mormonism, etc.
Feel free to leave your answer to this question in the comments.