if your parents are getting separated

My parents are in their 50's and should they decide this for themselves, who are we to stop them, right? I have always thought that they have paid their dues as parents and are now free to decide what would make them happy. If they should see that they'd like to spend their remaining years separated, then so be it. But of course, I would not blurt our this decision to them. I would just keep quiet. I used to think about forever and have seen how sweet they are. They'd hold hands, dad would still go to the danger side for my mother. Kissed every morning and before going to work etc. But things changed now that they're older. They keep on bickering, to the point of not speaking to each other (though it doesn't last very long for now). Should they decide to separate now, I would not do a thing to keep them from doing so, they're old enough, and we the children are also old enough to understand. I would intervene though if they'd start intentionally hurting each other, or should I still have siblings that are young. I for one would not want my children to intervene if we, the couple, should decide to separate. Not out of lust, not out of hatred, but perhaps out of boredom. Should me and my partner decide to leave each other, it should be according to proper reasons. Reasons that we both grew tired of each other and are done with our responsibility as parents. But still, should my parents decide to separate, it's their call. If they wish to get to know other people and start now then it's up to them. But if I were them, I'd probably just go along with it, and try to spice the marriage and finally grow old cherishing moments and stories of how they were when they're younger - that the best way to live life. Being in love with someone even though how wrinkled and forgetful both are.