|actually, if used properly and in combination with spermicidal lubricants and such condoms are supposed to be just as effective as any other form on birth control (99.9%)... Pretty sure about that, i've read that dozens of times in several different sources. Whatever... We all have differing opinions and such and whatever works for ya, works for ya!
p.S. No method is 100% effective in protecting against pregnancy except not having sex, and since that doesn't ever happen, it's good to have a wide array of options.