I am white, 45 and work in a government office in MoCo. My hair is past my shoulders and it is thick and curly. I have it cut frequently and it is layered. When I get color, I have her also straighten it and it is much longer. I love that look -- very sleek and sophisticated -- but it is a lot of work, I'm not that good with my hair and it takes A LOT of time that I do not have in the morning. I don't know whether it ages me or not, probably does to some degree, but I do get lots of compliments on my hair and DH loves it. I think it's my best asset.

I have had it cut shorter, say bob length (against the advice of my stylist). But the shorter you cut it, the bushier and more uncontrollable it gets. I agree with PP that hair is just one aspect of a "look." As long as it's neat and well-maintained, do what you want with it. Mine will stay long.