I feel most people shoot at apertures greater than 5.6 for the bulk of their photography. I realize the "wide open" fad is important to some but for me I only shoot wide open on the very rare occasion when the image I want to create demands that type of look.
The aperture used depends on the DOF wanted, whether one is using a tripod (available light) and many, many other factors.
Real world: If a lens can *really* deliver at a wider aperture, then it is welcome and I'll certainly put it to good use.
If your style is f/5.6 or less, then sharpness may not be a big issue, but flare and other quality parameters may still be.
but it happens a few times a year.





