As for 5: men get richer after divorce on average, women poorer. However, women report higher happiness after divorce while men lower. Then again, men are more likely to find new partner faster. Not surprisingly, women who have jobs are more likely to ask for divorce and women who depend on husbands salary less so.
For all the stories about large alimony, such situation not the norm.
Deadbedrooms are a thing as well. Being married limits your (ethical) options if for any reason your partner suddenly decides to no longer engage in physical intimacy.
Tbf I would assume if that's true it's because the men feel the need to achieve more. Thus women still do get more on alimony and child support but the men focus more on a career.
For all the stories about large alimony, such situation not the norm.