right to refuse service?

Recently, there have been more and more reports of pharmacists and doctors refusing to treat certain patients or prescribe certain medications because of their religious beliefs. What's going on here? Isn't everyone entitled to medicine and medical treatment?

I can understand not wanting to do abortions if you truly believe that it's murder (and quite frankly I'm not sure that I could perform an abortion myself), but then where do you draw the line? It's not right to deny an unmarried person birth control pills or a lesbian couple artificial insemination services.

More on that issue here

- Jean Chen