Inheritance and tax deductions ~ simply eliminate the federal death tax as well as the income tax and that’s most of your problem right there.
I was married once. I’m almost certain the the biggest threat to my marriage wasn’t the two gals in the next apartmnet complex who stopped driving stick and decided to play house together. No, I’m pretty sure it more to do with my (now) ex wife knowing that if she paid a lawyer $1000 she could use the government to take my kid, most of my stuff and a good chunck of my future earnings. That 50% divorce rate isn’t because government spent decades making marriage stronger with all the favors it’s done for married people with single people’s money.