I did. You can have a female that doesn't need a male or a male that doesn't need a female. That doesn't stop them from getting married. You're trying to engage in a chicken and egg discussion and are apparently too blind to see it. Without a consumer to buy a product, there is no use for the product. But, if there is no product to sell, the very definition of "consurmer" becomes moot. Neither can exist without the other. They are thusly mutually beneficial and neither is superior to the other. You fail to grasp the fact that people don't *need* to be married per se. Some just want to be. Consumers don't necessarily *need* a product. Some just want it. Ive you've ever been in a relationship, you'd understand that they are more complex than you're giving credit for. And you've way oversimplified the relationship to make a point that isn't leant to by your comparison.
BTW, since when is a marriage two people with the same intentions? The only common intent is being together and possibly having children. Few share the same aspirations. Most don't even share the same occupation. They may have commonality; but, the extent of that commonality is variable as to type and degree. Some people get married just because they can talk to one another. As simple as that may seem, it's pretty important.