Why only Buddhism talks about reincarnation?

In fact, samsara is not the central concept of Buddhism, nor is it unique to its family. Samsara is forced by the consistency of life and happiness. As long as we want to achieve the consistency between virtue (that is, the income from monasticism) and happiness (that is, secular happiness, there are many definitions of happiness, so don't confuse them), we must extend our life indefinitely, otherwise it is obvious that many good people (people who become Buddhists through monasticism) will have no good results in a hundred years. There are many victims of monks, bodhisattvas, sages and gentlemen. To fully explain this situation, life must be reincarnated. In fact, reincarnation is not unique to Buddhists, and Taoism also stresses reincarnation. The immortality of the Christian soul is reincarnation, because Christianity and Taoism also stress the consistency of virtue and happiness. It's just that Christianity doesn't have a clear statement about the method and effect of spiritual practice (just following Christ to imitate God, and there's no clear statement about how to imitate it), so there are only heaven and hell, and once you enter, you can't leave, because even if you come to this world again, it's the same, so you won't be allowed to come at all. But Buddhists can go in and out, because Buddhists pay special attention to practice and the effect of practice. It can be seen that the problem of reincarnation is only the completeness of the philosophical system structure. If Shi Daoye's philosophical system is compared to a building, then the problem of reincarnation is the lightning rod on these buildings, avoiding the thunder of harmony between life and happiness! Of course, you can also cancel this question and directly admit that people's lives are inconsistent, then you don't need reincarnation, which is what Confucianism does! This is the secret that Buddhism talks about reincarnation and Confucianism doesn't talk about reincarnation!