Reincarnation is a matter in which many countries don't believe in very much, but this doesn't mean one would not reincarnate even though one does not believe in it - it only means that the transition period between death and the next life is longer. Some reincarnate after death: for some the transition period might take up to hundreds and thousands of years, sometimes it takes even just a few months or days. This duration of the transition period is indefinite. Why would the
Sow the seed of cucumbers, reap cucumbers. Sow the seed of beans, reap beans. Buddha said: "If you want to know the cause planted in your previous life, just look at what you are getting in this lifetime; If you want to know the effect in your next lifetime, just look at what you are doing in this lifetime."