If I recall correctly, Paul Ryan doesn't advocate banning all contraceptives, but just certain kinds (particularly the kinds that may serve in killing an embryo after conception). I may be wrong in the specifics though.
Personally, I think that the mode of thinking of "NO GOVERNMENT" of some people is fallacious. I believe that government intervention is not necessarily a bad thing for anything. I advocate any legislation as long as it is reasonable and rational. And up to this point, I evaluate the pro-abortion arguments as more rational than the anti-abortion arguments.