Because I don't have anything to offer the right person.

I actually have brightly colored hair—bright fire red hair actually, so maybe that's not quite the same as pink, purple, etc., but before I dyed my hair, I was considered ugly. People made fun of my hair. After I dyed it bright red, everyone complements my hair and remembers who I am. I'm finally memorable and less of an eyesore. It's a nice thing to imagine that people are NOT that effected by looks, but unfortunately, it's not true. Maybe it's also the confidence that comes from knowing that I finally have something that is attractive about me and is memorable. Something that will cause random people on the street compliment my looks or be able to recognize me from somewhere else. I don't disappear anymore.

I don't think everyone should have/need bright colored hair...if you actually have something substantial to offer someone, and it's not something that you like, then you don't need it.

But for other people, simply changing the color of their hair can make them go from ugly and laughable to pretty and memorable. And that's more than I had.