Why do you color your hair? When is the last time that you saw your natural hair color?

Obviously, this question is geared toward jellies that don’t wear their natural hair color.
I’ve been coloring my hair since I was 13 (I’m 30), and I always colored it because I thought that my natural hair was bland. A dark, ashy blond – I think what most people would refer to as dishwater. About a year and a half ago I decided to stop coloring it, mostly to save money, but I came to realize that my natural hair color is actually quite pretty. It has darkened quite a bit as I’ve gotten older, it’s probably a medium brown with some red tones in it, but my hair is also healthier, shinier, and generally happier since I’ve quit messing with it. Now that I’ve quit dying my hair, I have a hard time even considering giving up my natural shade ever again, grays and all.

If you color your hair, how long have you been coloring it? What made you start? When is the last time that you saw your natural color? Is there a drastic difference between your natural color and the color that you put on?