Indeed, learning how your camera works before attempting to capture the decisive moment is the way to do it. I'm far from being an accomplished photographer, however even I would rather have everything set and working, and only worried about capturing the picture when the moment comes.
Clavius, from what you say the EVF scenario it's more like:
- check and eventually correct focus using any assist available
- check DOF and choose a suitable aperture
- check WB, adjust if necessary
- check histogram, adjust exposure
- check saturation, contrast etc
- check digital filters (because there's no way you could process later), choose one that fits
Congratulations, now you can take a picture of your now-in-college son!
I still don't buy the EVF is perfect image, as the reality is so much different than your words.