Because you said so yourself, I'll have a go :-)
I was thinking of the fatal 737 Go-Around accidents (Tartastan 363, Fludubai 981) where the crew got behind the plane. Having a good feel for trim makes the 737 so much easier to fly. I have 1500 hrs instruction time in the C172 and it's not as benign as one might think. You have to be on the pitch trim immediately, just like in the 737. Then there is the rudder too.... all aerodynamic forces are fed back to the pilot.
A chore is something which is a bit of a nuisance that you don't enjoy having to do, but have to do repeatedly, e.g. washing the dishes, or ironing your shirts.
That's how I understand the word too, except that trimming is an essential part of flying and not a dull activity you can put off to later
I've got about 6 months of FBW after 15 years trimming. It's not that I don't like it, but it feels 'synthetic'. How will pilots that's never been used to trimming cope when they're put in a situation where they have to? On the other hand, it does not seem to generate a lot of heartache so perhaps there are other elements of flying we need to worry about more. Instrument scan and pitch+power for instance.