I print only 1% - 2% of the pictures I shoot. And, I only print in 4x6
most of the time. Even when I enlarge and print, it would only be
8x10. In only one instance I have enlarged the picture to 20x30.

I do crop my images often, but not by much.

In my situation, I should keep the camera set at a lower resolution by
default and use higher resolution setting when I know I will (1) crop
the image eventually or (2) print a blown up picture. That way I can
take more pictures (and video) before filling up the memory card and
don't lose anything in picture quality. (Technically speaking, picture
quality and picture resolution are not related.)

Am I right in my analysis or am I missing something?

If you keep your camera set at the highest resolution supported,
please tell me why do you do that.

Thank you for sharing your opinions.