I think a lot of divorces stem from poor money habits, even if the grounds for the divorce ends up being something else such as cheating, incompatibility, or etc. According to CNBC, "35 percent of all respondents experiencing relationship stress said money was the primary cause of friction", and for middle-aged (44 to 54) couples "with relationship stress....44 percent said money was the primary cause." Once a money-based disconnect is introduced, you begin to see the infidelities and other related things, as the partners are no longer attracted to each other. http://www.cnbc.com/2015/02/04/money-is-the-leading-cause-of-stress-in-relationships.html
I've heard that mentioned before as well. Men generally earn more, and I have also read that women tend to do most of the spending. So where is the disconnect occurring? Is it irresponsible spending? Is it an unrealistic expectation of how to live within ones means?
What I have seen is that women make frequent smaller purchases (clothes, shoes, etc), whereas men make nonfrequent but huge purchases (boats, cars, motorcycles, and other toys like that). Both of their purchases end up stretching the paycheck, and both partners end up angry with each other. The average household already carries nearly $135,000 of debt, so when you make impulse purchases that turn every month a paycheck-to-paycheck month, the tension builds and drives the partners away from each other.