When wages were brought home in wage packets, not paid into bank accounts despite putting my wages into the 'pot' for mortgage, bills etc. I was struggling to make ends meet, often in tears...no holidays, no extras. We had 2 small children.
Friends were concerned, and one had a sister who worked in H's company so she found out what he earned. I was astounded, betrayed and felt deceived, and even more stressed when he told me I was wrong.
My solicitor revealed he had been withholding at least 1/3rd of his wages from his own family for an 'escape' fund kept at work. He then became Ex H [other factors at play too but that was the last straw]. I didn't know people did this when in a trusting marriage.
His damn 'fund' put me through at least 4 years, maybe more of being worried sick sometimes, and deprived our boys of numerous activities/fun/holidays/experiences in their early years.
It was deceptive, calculating and sly. I'd trusted this man for years and it was such a blow to me/us. Workmates had told him what to do and he listened to them, rather than hear my anxiety and concern. I don't know how he could treat his children so badly. So that's my experience of rainy day money.