When you operate close to the equator you can very usefully read off distance from the lat/long squares, since a nautical mile is 1/60 of a degree of latitude at the equator. Who needs those poncey metric units for distance and speed? On the other hand, for mass and volume I find metric to be the way to go.
And that POSH business; you even see some cruise lines using it in their brochures to hark back to some age of imagined luxury, as if one could await a 2:1 ratio of self to grovelling underlings on some modern monster cruise-liner. Nowadays you have to pay extra just to get a window!
When I finally made Captain on a multi-crew aircraft I was very disappointed to learn that flogging had not been carried over from the old ways of doing things. Not PC, I guess....