Marriage is an arrangement that has served mankind well since the dawn of time. Every culture (to my knowledge) has it it some form and families have raised the next generation with input from both parents.
Would we be better off free to roam, have casual partners and be independent? When you are young it may look that way if your marriage is not happy. I accept that many stiii end up alone as divorcees but if you can weather the bad times many do find happiness together as older couples.
My wife and I have been through it all but now in later years when health fades and strength recedes, we are very glad to have each other. I am totally grateful for her care of me and she says she is glad that I am still here
I’m just saying that life, and marriage is a marathon not a sprint and you need a long term view.