So not a day goes by phone-banking, canvassing, or just talking to folks about politics where someone won't say, "there is no difference between the parties or the candidates".
Sadly, on some issues, that is somewhat accurate, lobbyists have in some areas purchased enough Democrats and Republicans that they have pre-determined the outcome.
But if you look at a lot of issues, there is quite a difference. When George W paid back the fundamentalist Christian base that delivered wins for him in both 2000 and 2004 with abstinence-only programs that have proven not to work time and again, real people's lives were impacted. Real unwanted babies were born. Real abortions that could have been prevented weren't. Real girls that might have been able to finish school, get a job and lift themselves out of poverty didn't.
Obamacare does make birth control more accessible, and in virtually all cases free. The cost/benefit to society as well as the individuals mentioned above are not hypothetical, and they are also not in Gov Romney's phantom healthcare replacement that he would enact on day one.
Free Birth Control Cuts Abortion Rate by 62%