The high points of life are all moments of love.
But if there is to be love, there must be free-will.
If everyone has their own free-will, then by necessity there will be conflict.
If there is conflict, there will be pain.
If there is pain, there must be patience.
If there is patience, there must be hope. And one only hopes for something they love, which brings us back where we began.
Thus, in the cycle of life, the beginning is love, the middle is heart ache, and the end is hope.