This idea is somewhat unique and it's bound to intrigue. There is no need to defend anything either the concept of marriage or no marriage. The point we are interested in is how life can be happier. That's all. The ultimate aim is living a more productive and happier life and exploring the means to achieve that. If something does not serve its purpose we have to look for a better solution. Nothing is to be held sacred except the principles of humaneness, compassion, integrity and transparency. And I believe this "no marriage" concept holds a very conducive environment for this to happen.