I'm aware of (and annoyed with) her flaws but I still really appreciate her qualities. This essay pretty much sums it up:

rous.redbarn.org/objectivi...zards.html

I find that people who have reason to recognize themselves in, for instance, Peter Keating or Catherine Halsey tend to hate Ayn Rand. If you don't dare say no to your bitch of a mother (or wife), or if you made the mistake of marrying for gain instead of for love, or if you gave up pursuing romance because you were hurt in the past, or [insert any kind of behavior that goes against your own long-term interest], Ayn Rand is not for you. If, however, you're struggling with such choices, reading Ayn Rand can give you the strength to make the hard but right decision instead of the easy but wrong one. And for that, I'm willing to forgive her for all the fanatic craziness.