Until my mother was in her seventies, I'd never heard her swear, but in her old age she started cussing like a trooper. I remember her repeatedly lambasting her sewing machine with the pinking shears and yelling, ‘You absolute bugger, you f******g well WILL work, you WILL work!’.
Abandoning the principles of a lifetime is liberating. Having almost never bought a ready meal, nor eaten junk and always cooked from scratch, I'm discovering that I'm now a lot less fussy.