Because tax dollars are spent performing them. Why are drugs a political issue? It is, afterall, personal choice. If I grew my own pot, or concocted my own crack cocaine, why should the government care?
Why is healthcare a political issue? Where in the constitution does it say that I have the right to government subsidized healthcare if I can't afford my own? A lot of issues are political when they shouldn't be. But this issue is not about "choice". It's about convenience. A woman doesn't "choose" an abortion like she would a pair of shoes. She gets one in order to make her life more convenient. I know that the N.O.W. will probably revoke my membership for saying so, but that's what I believe.