Reasons I buy:
1. National security -- too easy to conceal weapons, can disguise men, known terrorists etc.
2. Safety -- especially not safe around machinery, flames, cooking. Harder for drivers to see at night.
3. Health -- if out too much, not enough sun, fresh air. Eye problems if eyes covered.
4. Too hot, restrictive etc.
5. If women are truly abused by it, go after abusers.

Reasons I do not buy.
1. Well, it is not in the Quoran. Oh well, wearing big flowerly hats is not in the Bible, but they wear them to some Baptist churches. Lavendar dresses are not in the Book of Mormon but they wear them. It is hard to separate a monoculture from its religion. THey get very entertwined.
2. It is sexist. Probably, but some are choosing to do this and some are probably forced.
3. We know best in all these situations. No, not really. And who will be next and what symbol will be next?