AmericanPregnancy.org also argues that a reason why there are fairly high failure rates for many of the main contraceptive methods is because some people are not using them correctly.
For example, many women find the female condom difficult to use and may accidentally skip a day when using the pill. However, for most people, contraception provides a very secure protection against unwanted pregnancies. If you follow the instructions and use the birth control pill correctly, it gives you great protection against pregnancy. You could even use two contraceptive methods together, such as the pill and condoms, to get extra protection from pregnancy.
Natural Family Planning (NFP) actually has the highest unwanted pregnancy rate when compared to the artificial contraceptive methods at 25%.
Therefore, we do have a responsibility to use contraception because, typically, they are the best way to prevent unwanted pregnancies.