That figure is outdated and I'd challenge what it represents. Here's more up to date info:
>The most recent data we have from the 2019 American Community Survey puts the rate at 14.9 divorces per 1,000 marriages, the lowest number since 1970. [0]
Further, the "50% of marriages end in divorce" is heavily skewed because it includes serial divorces/remarriages. If 5 couples marry for life, and one person goes through 5 spouses, then 50% of marriages end in divorce. But what you're really saying is that 80% of marriages are stable and 20% are unstable, not 50/50. Divorce, and re-marriage, also increase the chance of future divorce according to the Census Bureau[1].
[0] https://www.fatherly.com/love-money/what-is-divorce-rate-ame...