[dangus]

>> Well, maybe it’s the guys you know who mess up. <<

*Pounds head on desk* Trust me, I am not using data from guys I personally know.

[discostu]

It really is all about whether or not you do it right:
http://www.webmd.com/sex/birth-control/news/20120224/condom-misuse-common
http://goaskalice.columbia.edu/explanation-condom-failure-rates
Failure rate is 2% when you follow all the instructions, 15% when you don’t. Most of the bad stats come in because humans just aren’t that great at following instruction at the best of times, and we get much worse at it when the hormones are flowing.

[Brian Kopp DPM]

I'm one of five children. My enlightened catholic mom said all of us were the product of one or another failed form of contraception of various kinds. And back in the '60s her parish priests told her contraception was fine.