My husband and I were talking about some theoretical concepts regarding life and how people choose to live. It's all pretty complex stuff, but it comes down to the choices we make and how we "buy" ease in the present at the expense of some benefit in the future. For example, you might decide to buy a frozen pizza instead of making your own dinner. You spend more, get a less nutritious meal, and probably have less overall satisfaction with the food. You're borrowing money and health from your future for convenience in the present.
I'm not criticizing this tendency. We all do this in different ways and this isn't about morality, but an observation about how we lead our lives. The way in which this relates to birth control is how the role of children has changed in developed societies. Having babies used to be a way of buying an easier life as more kids meant more potential economic, lifestyle, or work support. In the present, having children is actually a way of forfeiting future comfort for the immediate gains of enjoyment of babies/kids or simply avoiding the use of birth control.
Because having children tends to be about future hardship rather than future gains these days, birth control plays a pretty important role in modern lifestyles. A lack of moral hang-ups about whether or not to use it (and not discouraging it from being freely available to young people) allows people to be thoughtful and make certain choices without any sort of psychological baggage. I still miss the way in which the Japanese were non-judgmental and pragmatic about such issues rather than emotionally activated and dogmatically oriented.