I have worn a skirt every day for the last 2.5 years. I guess it started because I thought that skirts accentuated certain "problem areas" less than shorts in the summer, so I switched from shorts to skirts about 3 or 4 summers ago. I gradually started to feel more comfortable in skirts than pants, and so the skirt revolution (in my wardrobe, at least) began. I've been asked if it's a religious thing ("It is now," I've quipped more than once), if it's a modesty thing (no ... unless you count the whole shorts thing at the beginning), if it's a girly-girl thing (I suppose this could be part of it).
I just don't like to wear pants anymore, although I would, in certain circumstances. For example, if I were to go skiing (I never would) or snowshoeing (I really want to), I'd wear pants. But otherwise ... not so much.
Circumstances in which I have worn a skirt in the last 2.5 years:
moving - twice; plus moving some furniture around, up & down stairs, etc., in between
tent camping in the woods
bike riding (with bike shorts underneath)
Circumstances in which I have failed to wear a skirt in the last 2.5 years:
sleeping (I always sleep in pants ... usually hospital scrubs!)
working in a hospital (hospital scrubs here, too)
Do I ever see a pair of perfectly faded, striated jeans that I really, really want? Yes, but I like skirts more.