Love is always conditional and it always comes with strings attached to it. Anything that comes with strings attached to it is not enough to conquer the world. And you can use the above examples to show that all of them tried for a reason, alienating someone else. Love binds only certain group of people or divides people or you can also say love exists beacuse there is hatred just like light and dark. And hopefully you do not beleive in the above lines.