Given the chance, by meeting someone i truly loved and who loved me back, i would have no hesitation in compromising to stay together - till death do us part. I think its a mixture of all the things posted on this thread. Survival instincts are what drive living things to mate in the first place. For a species to survive, mating with as many different partners as possible is a very basic instinct. Humans can work both ways but as with some other animals the welfare of our current offspring becomes the most dominate instinct, more so than having multiple offspring. Love between partners is a strong emotion that humans seem to have developed greater than any other species . I guess the "till death do us part" is down to individual emotion and and social upbringing. I'm all for it with the right person.

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ooops..... wrong forum!!!