Some co-workers of mine find it strange that DH and I don't use BC. We will be together for 5 years this Oct, and have only used condoms, but only to try them, not to prevent pregnancy. We use the rhythm method. It's just works for us. DH doesn't want the chemicals or hormones of BC like pills or the shot in me, as they can have serious side effects, and prevent conception when deciding the time is right.