This is an interesting question indeed. Remaining sweet sixteen even in your 70's, that would be so awesome. It would be the best thing that ever happened to a woman for sure. To be sincere i reallly don't think it would matter that much, even if it did, it would take a very small portion of someone's life. I think when people finally decide to get married, they marry because they are in love with each other and not because of their beauty. If people got married because of their looks what else would they look forward to achieving really, they have what they were looking for already, so nothing else would matter to them. Unlike when you get married for love there is a lot to look forward to im a marriage that would be more fuldilling than beauty would. For me i don't think beauty would auatain a marriage it doesn't have much to offer but looking good for each other, there are other more important things that will keep people together.