Because of who and what we really are, and 2. Because by meditating we begin to use, consciously, our birthright and inheritance. The great failing of Christianity toady is that is has not only allowed itself to become institutionalised, but it separated us from God, put God outside of creation as an observer waiting to reward and punish mankind for its good and bad behaviour. You were children of God before the world was. That which man calls 'God cannot be separate from its creations.
Nothing exists outside of 'it'.
When we call it nature, matter, energy, Tao or Dharmakaya, we change nothing but the word-symbol. When we realise for ourself through direct, personal experience that the essence of our true nature is Godly, the Inner Power, Wisdom and Serenity that you may draw upon is limitless. As for or Birthright and inheritance. Then it did a beautiful and loving thing. It allowed mankind to create itself, indeed its own world, in its own image.