Condoms are the way to go, sure. Outside of casual sex, if you're already settled in a long term relationship, but don't mind having a kid because you're able to, I think pull out is okay. I think that should be the precondition to try this method, so no surprises either way. I read that out of a 100 couples, just under 5 still get pregnant (usually pre-cum can be enough to do it). It's effective, but it can happen. Just know what you're doing.
The thing with the pill is that's based entirely on trust. I'll just say I know people who aren't very trustworthy.
Just my two cents.
Hell, I'll share just my personal experience that I'm not too proud of; been with a woman who was certain she couldn't get pregnant. Some medical bullshit. She's fucked enough times with guys that I believed it - like an idiot. Got word she got pregnant, but with a boyfriend I never met. I didn't know about him then, but I SWEATED. I never ejaculated inside her, and was pretty sure it couldn't have been me, but God. Damn.
You young studs on /azu/, remember; no glove, no love.