The divorce rate in 1945-47 spiked to a peak that it wouldn't hit again until the 1970s. If one lived in a state where proof of adultery was required, it was easy enough for a couple who couldn't wait to get rid of each other to arrange for that proof to be available. "Mental Cruelty" was another very popular ground that covered a lot of territory in states where it was acceptable. It's also interesting to note that the divorvce rate remained elevated, compared to prewar levels, all thru the 1950s, never dipping below 20 percent at any time during the "Togetherness" decade. The road to Levittown might have been paved with gold, but still one out of every five marriages was headed for divorce court.