In a great wife you have sex on tap, a partner who backs you & supports you, a confidant, a helper, a companion and a sacred physical intimacy that is an emotional bond between two people; a life mate. That is before you get to the arena of a nuclear family unit, stability for children and all those benefits. And those benefits do not consider the social value a wife has in social life.
Now. You may not personally value the things I listed, That's fine. If you don't then you are not someone who will understand the worth of the attributes I listed.
However many men, even powerful high value men, DO place high value on the things I listed and there are tons of examples.
Donald Trump is married, Kevin Hart is married, Jon Bon Jovi is married (to his high school sweet heart), Emmit Smith is married, Ralph Lauren is married, Patrick Mahomes is married (also to his high school sweetheart), etc. etc etc.
These are very high value men who don't need to be married for sex. Therefore marriage must offer more value that a high status, high value man with unlimited options can appreciate. If not then these men would just remain unmarried.
Many men appreciate the value of marriage. You do not. But your opinion does not constitue the only opinion on the subject.