I read something interesting recently about hormonal BC. The article said that it can interfere with mate selection. Women are more likely to choose mates with a more similar genetic makeup when they are on hormonal BC. That means less genetic diversity and all the potential problems that can go along with that. Some people think we know so much about how the body works but we really know very little. I don't like the idea of messing with things when we don't really know what all the results will be.
That's how I felt on the pill. I just felt that it was somehow wrong to stuff a 40 day cycle into 28 days. My GYN said it was totally fine, but then again, last I heard, medical providers don't even know exactly why the pill works, they just know that it does.