Most long lasting relationships takes having much in common. Obviously a high sex drive will not do well with a low sex drive. And of course, sex is not the only thing to a relationship but it is one of God's design for intimacy and building a family. So it is important and many divorces often are the cause of money or sexual immorality.
I married young, right out of high school and still married with the women I met in high school. The sex drive in the early twenties was high on both sides and the results came 3 kids.
The highs and lows of parenting caused sex drives to be high or low and often times it was opposite for us. This created tension as for example I may had been exhausted and my spouse felt I wasn't attracted to her. It was stuff like this we had to work through. Now in our thirties it is beginning to level out as kids are growing out of the infant stage.
As for satisfaction, yes marriage provides better sexual satisfaction.
Read this-
About 88 percent of Americans say they are happy or reasonably content with their married sex. And three-quarters report that their sex lives are reasonably fulfilling. That’s according to a national poll of 1,001 married Americans commissioned by Parade magazine.
In researching for my book
His Brain, Her Brain: How divinely designed differences can strengthen your marriage, I found stunning research that shows:
- Sex is better in marriage
- Sex is better among religious or spiritual couples
- Sex is not better if you cohabit
https://www.imom.com/poll-shows-sex-within-marriage-is-more-fulfilling/
My marriage fits this conclusion. It is probably because if you both conform to be like Christ then you also both wish to unselfishly serve the other with their desires in mind. You also intimately grow into a trusting relationship, where you easily learn what works and what doesn't.
When scripture says they become one flesh, it is both spiritual and physical. You are now acting as one. The oneness I would say it is what makes the religious marriages sex life better than all other ways. The spiritual is without guilt and completely free to live into God's design.
Unfortunately, this topic is not spoken on much in the church. God has a lot to say on the topic of sex and it isn't just about sexual immorality. If you live in God's design, you will be satisfied.