You cannot draw the conclusion of more divorces means worse. I would argue, as in my case and OP, that people who don't have other prior partners may go most of their life not knowing how pathetic their life actually is. They suffer in silence in marriages because they don't know better or are trapped by moral obligation imposed by society or religion. I would argue that the people that divorce represent those that correctly recognized a bad relationship and felt empowered to leave it to find happiness. Ironically, a low divorce rate may signify a higher percentage of unhappy relationships. My wife and I are sexually incompatible. There are people that want sex everyday and people that want sex once a month. If you think these people can be happy if they just communicate and compromise, you are smoking something. They might stay together, but will never be happy. Staying together is not a sign of success.
We didnt live together or have sex with each other before marriage. We got to know each other very well before marriage, we communicated about sex as about many other things.
In marriage its not all about what WE want. Its about compromise and thinking of the other person. So if one person wants sex once a month and one twice a week, then you compromise and make it once a week, say. If one spouse expects their way all the time, something is wrong.
Even if we dont 'feel' like having sex one day and our partner does, we can, shock horror, still have sex with them whether we 'feel' like it or not because we love them and care about them. I have done that often.
So its not vital that both want sex exactly the same number of times because in marriage we are 2 different people and will never be the same in sex or anything else.
As time goes on, sex lives change, children come along, there may be illnesses or other issues that change the whole physical relationship, and if the whole marriage is based on whether both spouses have the same sort of sexual desires, it wont last. Prior partners add nothing to the marriage, a good sex life is what you make of it between the 2 of you, and isn't dependant on what do did or didn't do before.
We are missing nothing by not having slept around. I am far more attracted to my husband because he never did that. Its one of the things I love about him.