Hey there,
Nope, I'm not married (never have been)... so there's no husband to command it.
I cover because of the scripture that's been debated here (1 Corinthians 11). Its been very interesting to read everyone's opinions on the subject but I still feel just as convicted to cover. Its a personal choice and I certainly don't look down my long nose and other ladies who don't cover.
Its also about modesty for me. I think (in general) we try to look a certain way to please the world and each other. For me, people told me how beautiful my hair was one too many times and I was getting a swollen head about it - pride. When I read the scripture suddenly it made sense. I read it, re-read it, prayed about and pondered it. I came to the conclusion that covering my hair would be a bit of a sacrifice and an act of obedience to the call I felt in my heart.
Its quite amazing how much free-er I feel... I don't have to worry about having my hair 'just so'. I know some ladies only cover during prayer but since we're called to pray 'without ceasing'... I keep my head covered except when sleeping.
I can only speak for myself. There are other ladies here who can give you completely different reasons for why they cover.
-Deedee