My wife has always threatened ground glass in my coffee. When I gave up sugar in the Great Sugar Shortage of 1970 [?] it became more difficult and since I now do most of the cooking, it is nigh on impossible.
We have always argued and now we even argue about things we agree about. We sometimes compare notes with other couples and bickering seems to go with the territory.
I admit to being grumpier. It may be a man thing but, let's be fair, it is not always the man's fault, even though many believe the man's place is in the wrong.