Hi Embodied,
I have no qualms about people believing in rebirth or not. I’m just saying, validating Tilakkhana against our current life experience is essential, but not good enough. We cultivate the path in accordance to Buddha Dhamma because we want to end suffering. Otherwise, learning philosophy from Lao Tze or Confucius would be a good enough option for us to cultivate an ethical lifestyle that ensues our current life unsatisfactoriness is kept at bay. But this alone can at most warrant a heavenly rebirth. Both Lao Tze and Confucius are deities in Taoism. Lao Tze being the founder of Tao (The Way).