On another thread there's a question, "Are you tired of coming back?" and to that I would say, well, I'm not tired of living, but I often feel like a gifted child that got stuck in a class with all the remedial kids. I think people come to an awareness of reincarnation naturally as their souls mature. Unfortunately, I feel the world is being run by some very immature people these days.
It's my personal opinion that the awareness of reincarnation (and spiritual awareness generally) has been unnaturally suppressed by materialistic opportunists. I believe early Christians believed in reincarnation and a direct connection to the divine, and that view was deliberately outlawed by priests and others who would profit from being "middlemen" to God.
I've heard Gautama Buddha was once asked whether there is life after death, and he answered, "that question does not further edification." And at the time he was asked that, I'm sure that was right. It kind of defeats the purpose of reincarnation (learning lessons) to know all this stuff before one is ready. But times change. I think we are now at the end of an age, a time of Revelation, and as the song goes, "to everything there is a season, and a time to every purpose under the heaven." With all the new technology, I don't see how it will even be possible to keep the truth of reincarnation under wraps anymore. That's my personal opinion.