“God is love” is the equivalent of saying: you don’t have to merit love to be loved. That kind of love is called (by many Christians) agape. Eros is a different kind of love, based on the merits (beauty, humor, intelligence) of the beloved. When you love someone, you’d do just about anything for them. If you’re indifferent, you’re likely to do nothing. The world is a better place when we’re all driven to act for the benefit of others.