I was bright baby blonde when younger but it has darkened to a mix of ash and pale caramel as I got into my late forties. I am now 50.
Years ago I started having highlights (£150) as I suppose my identity still felt caught up in the older, blonder hair. I only needed them doing once or twice a year but stopped in the first lockdown. Haven't had it touched since.
Now, I've made an appointment to go back and get them again next week, but have suddenly decided i kind of prefer my natural hair! Was not expecting this. The highlights did make the lengths somewhat damaged and when they were growing out the difference was very obvious, which have since been cut off.
I have no greys yet but most of my family went silvery white. So no idea of the future just yet, which i am sure is just around the next bend 
As I love to wear my hair up in a claw clip when working, and occasionally braid, the highlights always looked crap when growing out. They graduated lovely at the top, when it was worn loose, but the undersides, even with excellent, expensive colour, do look obvious.
Would you keep it as it is in my photo? It is to bra length at moment. The photo is my hair now fully natural in daylight. The pic was taken in April so it is a bit lighter now due to being in the sun.
Is it odd to suddenly really like the natural colour of your hair!!???
I kind of love not having to worry about roots, upkeep, damage and whatnot.
I was always told my hair was 'cool' and 'ashy' but i can definitely see warmth in it.