They provide even light reflection, to give the surface a softer, more uniform look.

They don't highlight surface imperfections like higher sheen paints, so they usually don't require as much surface preparation (like patching, texturing or sanding) prior to painting.

They are much less likely to show 'lap marks', so they are generally easier to apply and touch-up than higher sheen paints. (When one painted section dries before the next section is painted, the two sections won't flow together into a uniform film, resulting in a 'lap mark'.)

They don't need to be sanded or deglossed before repainting, unlike higher sheen paints.

They are less stain and scuff resistant than higher sheen paints, so they should not be recommended for high-traffic areas or on surfaces that will be handled, washed or scrubbed frequently.

They are less washable and less moisture resistant than higher sheen finishes, so they are not the best choice for areas that are exposed to high humidity levels, or on surfaces that will be washed frequently.

They have better stain resistance, so they resist dirt pick-up and stay cleaner longer.

They have better scuff and wear resistance, so they're good for high traffic areas and on surfaces that are handled, washed or scrubbed frequently.

They have better moisture resistance, which makes them ideal for surfaces and areas that are frequently exposed to high humidity levels.

They have a smooth, bright, more lustrous finish that some people prefer.

They tend to highlight any surface imperfections, so more surface preparation (like patching, texturing or sanding) will usually be needed before painting.

They are harder to touch-up than lower sheen paints, because the higher sheen tends to highlight the slightly raised surface of the film where the touch-up was done.

They usually need to be sanded, deglossed or primed prior to repainting, to ensure good adhesion of the new paint.