Other ways to put it: "Would taking 10 seconds to do this now make my wife 1% less stressed?" (If so, do the thing to make her less stressed.)
"Is it worth starting a fight vs spending the same time just fixing the problem?"
"Would spending $COST_OF_THING make my wife happy for a day / make a fond memory of us together?" (Hence why I encourage my thrifty wife to spend a bit of money on semiprecious jewelry or clothes for herself that she enjoys)
"If I cheap out on $COMMMONLY_USED_ITEM, will my wife and I be annoyed by its limitations / bad user experience for years?"
Granted, I am fortunate to be able to pay the bills and have a little extra for the occasional splurge for my wife. And my wife is kind and understanding and I love her dearly. But I learned long ago that doing a little bit extra / spending a bit more for a quality item pays dividends in reducing friction and annoyances daily.
Those daily annoyances add up over time, and not in a good way. Make yourself aware of them, and then fix them. Cut down on stressors so you can spend more mental bandwidth on your wife and kids.