Stay tuned, because this is only the first of a series of three articles on miracles. The next one, which is already finished, addresses the question of pantheism and the atheistic miracles of nature (that’s an understatement, I think). The third article will focus on whether it’s rational to believe the story of Jesus’s resurrection.
According to the myths, miracles will become common rather than rare only when this world passes away and God’s kingdom is brought to Earth. That transformation moots the distinction between nature and supernature. In the present natural order, miracles are meant to be hints of that “imminent” transformation, so they’re rare for the purpose of tantalizing us.