After reading this answer for another post:
I don't mind the vignetting as it actually improves the look of portraits however if you're doing astrophotography what's the point in a lens that's f/1.4 in the centre and f/2.0 at the edges? Having said that vignetting is not really a problem with a crop camera.
I was wondering if astrophotography is really the only reason that one should be concerned about a lens that has strong vignetting. If I am purchasing a wide aperture prime lens such as a 50mm f/1.4, 85mm f/1.2, or a 135 f/2.0 that will primarily be used for wide open indoor portraits - is vignetting a non concern?