As has been discussed on this site in the past, the c-section rate in the United States is nearing the point where a third of all births in the United States will be by c-section.
Having experienced both kinds of childbirth, I can't fathom why women with normal pregnancies would deliberately choose to have major surgery. This article discusses some of the pros and cons. One of the issues is that we don't know yet what all the long-term ramifications are:
"C-sections are safer, some researchers are finding, without the last-minute rush to surgery after an exhausting trial of labor. But critics of elective C-sections see a downside. Such research is early and conflicting, they say, and science doesn't yet understand the time-honored trip down the birth canal. Babies delivered by cesarean section have more respiratory infections later in life, and may have more gastrointestinal tract problems as well."
One attorney-obstetrician quoted believes the c-section rate will eventually go as high as 60%.