Love is pointless. It is simply an incentive from a subconscious and primal conscious to get us to reproduce. "The most powerful force in the world" is simply our primal minds' way of saying to our forward mind "continue the species!"
Love: When they walk in a room and you know their there before you see them. Your day could be going to hell and back but when you see them you smile and your day is better. The thought of them comforts you. Just a all over great feeling. In lame terms its like getting the toy in the store you wanted as a child. It's the feeling of watching a sun rise and sun set. The joy of seeing snow for the first time. It's a heart felt emotion. Utopia in your mind.