We all have our 'pet peeves' and areas of expertise. I know I honestly have trouble understanding if a Finn tries to pronounce an English word - since Finnish is phonetic, it can come out sounding kinda strange. I've gotten better at 'decyphering', but it still happens. When I go home and someone talks about 'Nohkeeeeah'(Nokia) or IIKeeeeeah (Ikea). I probably come off sounding 'snobbish', but truth is, I don't understand what they've said! I try to make light of such situations.
'Picking' becomes a problem when the person doing it sounds as they are putting the other person down, or does it constantly. Obviously, with your client you needed to know exactly what you were dealing with, and it would have made sense to ask exactly what they had before you left.
With W&D, I know there are a lot of 'misconceptions' about just about everything that people pick up along the way. (a little knowledge is a dangerous thing!) But sometimes, people are more comfortable in their ignorance, and as long as it's not hurting anyone...I can understand you're wanting to explain it to them, but if they continue to use their old 'shorthand', and you continue to pick...it becomes a bad cycle.
I know H is pedantic about grammar, he does a lot of text editing, and is very protective of his mother tongue. If he could take the time to figure out how I learn best, or even sit down with me and figure out a way to for him to 'correct' me (best would be to speak Finnish together), I could deal with that. I don't deal with grimmaces when I'm trying to talk to someone, or constant interrupting of my conversations.
I also understand he has his own way of doing things from vacuuming to dishwashing...but if he's going to leave the brunt of the housework to me, I do think it's resonable to ask that he accept that I do things differently.
That's all I'm asking. I would like to think that if other areas (like the bedroom) of our M were in working order, his 'quirks' wouldn't bother me so much.
So 'pick' when you must, but choose wisely, and do it nicely.