There have been references to reincarnation in the writings of most civilizations throughout the ages. Eastern religions accept reincarnation more readily than western. I won't get into it here, as it is not the intention or scope of this lecture to get into religions, and religious beliefs. Reincarnation is a highly debated topic and brings out strong opinions, especially in the scientific community. Some believe this fascination is only because of our fear of death - our fear of ceasing to exist.
Death has such finality.
If we believe we live only one life, it would mean we are quite insignificant in the universal scope of things. For some, that mortality is easier to cope with in the knowledge that we will be again. Others find it a very logical explanation for such phenomena as deja vu, child prodigies, or that feeling of already knowing someone we've met for the first time. Many of us have probably experienced going to a place for the first time, and instinctively known our way around or have that uncanny sense that we've been at that place before. With people, again, often we'll meet someone for the first time, and have a sense of familiarity with the person.