There were many years in both of our lives when we had to live paycheck to paycheck, and we weren't sure how we were going to make it to the next payday. This caused a significant amount of stress and anxiety, some of which we occasionally took out on each other.
Now that we can comfortably make ends meet, there's way less strain and one less reason to argue. As Business Insider previously reported, money can be one of the biggest sources of tension for couples, since it's a constant in all of our lives, so my increased earnings have turned out to be a good thing for us.