At this point even low end bodies feature 24 MP, 12 stops of dynamic range and rather good low-light performance.
Combine that with any somewhat decent lense and you can take pictures far sharper and with higher dynamic range than most displays can show.
Even 4K is just barely above 8 MP and good luck finding a screen capable of three times as much, pretty much nobody will view your image on a screen with that high resolution.
These days it is far more about composition than it is about overall sharpness.
Either your pictures look good or they don't, unless you do a 100% crop side by side you won't see much of a difference most of the time.
If you want insane resolution, shoot CMS-20 II film in medium or large format and scan it at something like 20.000 dpi.
I don't see why anyone would need that much resolution, but it is about as much as you can get these days.