Who in their right mind would ever think that humanity could possible learn all the lesson we need to evolve spiritually in a single life time? Considering that for thousands of years humans rarely lived past the age of 50 and the answer should be fairly obvious.
Of course we reincarnate, because most humans cannot even grasp basic ethical and moral principles, we must continually reincarnate on this living hell we call 'Life on Earth' so that we may eventually grasp the concept of giving, unconditional love and forgiveness.
The main point Jesus was trying to make with his resurrection maneuver, that everyone seems to have missed, is that there is indeed life beyond death, that his and everyone else's soul is immortal.
Hello, anybody home? Wake up folks that is/was the point of the whole exercise, to make people aware that if you want what he has you need to get with the program.