I was an early grayer, started at 15, and have black hair, so I was forced to color my hair. No way was I going to be half white hair by age 20 like my grandma. And I HATED those roots but didn't want to be light haired, what with the bleaching needed. I knew one woman who bleached and her hair started falling out, she could pull off fistfuls. As soon as I retired I let my hair grow out, all white by this time and have never regretted it.
I agree, women look much younger with colored hair and it looks good as long as it's not a dark color like black or dark brown. But, to have to put that toxic stuff on your hair every three weeks or so to avoid those root problems? Not for me, I rather look my age.