I'm 52. Ever since I was a teenager, I've had dull and mousy light brown hair. When you combine that with my pale skin and eyes, you end up with one very washed out looking person. Hence, my decision to begin highlighting my hair at least 20 plus years ago. I've had to use more color, though, as I've gotten older. At some point in my 40s, after putting off color longer than usual, my stylist and I noticed that though my hair had only a few grays it had faded. It looked exactly like my mother's hair, who at 76, has only some gray hair, but a whole head of washed out brown hair that is flat and lifeless.
Not only does my mother's appearance push some buttons for me, but, as I've mentioned before, I have a chronic illness. Although technically invisible, my migraine disease has a tendency to make me appear ill: paler than usual, circles under my eyes, and like I have the flu or something. When my hair isn't colored, I feel like that makes me look sicker. And, frankly, my psyche just can't take it.
I'm all for not coloring if it works for an individual woman. Mine is totally a personal decision, and one I would change if I were comfortable with how my hair looked. If my hair does change, I'll revisit the whole thing.
I also go to a salon where they use more natural hair dyes. I figure that's the least I can do.