What are your thoughts on hormonal contraception (e.g., "the pill")?

Phoenyx recently asked about thoughts on a pill for men.

I was wondering: how do we feel about the pill for women? (The same question goes for other kinds of hormonal contraception: the patch, the ring, depo-provera, norplant, mirena, and any others I might be forgetting.)

Do you take the pill? Are there side-effects you don’t like that you just put up with?

Do you not take the pill? Is it because of side-effects or somthing else?

I am especially interested to hear about any cognitive effects you might have noticed. I study sex hormones and memory, so this is something I have wondered about for a long time now.

Finally, if scientists uncovered a very mild but negative effect of birth control, do you think this would discourage women from taking it? And would that discouragement be a bad thing?