I think it depends how you grow grey. One friend has gone elegantly iron grey with grey hair distributed evenly throughout her hair. Mine is growing grey by giving me a halo of white hair round my face but still my original dark colour elsewhere. Not a particularly attractive look. So I dye my hair. It only needs doing every two or three months so it is no hassle.
Why are we so po-faced about older women dyeing their hair. Younger people think nothing of it. DD has been her natural dark brown, blonde (did NOT suit her), bright pink and a mixture of several. I saw a photograph of the writee Edna O'Brian, aged 80, recently with flame red hair. It looked fabulous.
I have always liked the colour of my hair so want to stick with it as long as I can but once it goes really light grey or white I intend to dye it pink, or red, or purple, not green, it doesn't suit me.