This is an old-fashioned mindset, to think black is a bad or unflattering fashion color. Black used to be reserved for mourning and I think that with very old people, that opinion remains. It probably came from their Victorian or Edwardian-era parents.
I also think it's hilarious how old ladies wear these bright pink pantsuits etc. and feel like it is making them look more youthful. NOT.
I also think one wears black for reasons other than pure face flattery and they are JUST AS VALID. An all or mostly black outfit lets you focus on the architecture and shape of your garments; it is great for travelling; it can be edgy; it is very slimming; it is minimal; and, it lets you be in the background. Honestly sometimes it drives me crazy that flattery is like the "only" valid aspect of fashion! Here I am thinking of someone like Anna who is achieving something interesting, fun and conceptual yet doesn't always get the forum love she deserves because she is not afraid to push the envelope of conventional flattery.
OK and here's what everyone knows: all black, next to the face, can be less flattering than *some* colors. My advice is to wear a bit more make up, especially lipstick, and to have other colored accent pieces. Even if your clutch is bright white or red, the addition of color somewhere on your body makes for a more flattering look. I am sure you know all of this but it feels good to repeat it because then I am validating my own love of black (and I do NOT have the complexion nor hair color to pull off black like you do).
The other trick to wearing all black is to change your hair color: platinum blonde, red, and jet black all look amazing with black. In fact I've been wanting to go very light just so I can pull off more all-black outfits a la Odyssey Home.
/RANT OVER!