During discussions about free contraception (usually for women only), feminists often bring up the point that Viagra is covered by health insurance. This, they claim, is an example of discrimination against women.

I think it isn't, for several reasons.

(1) Fertility is not a disease or a dysfunction. With a few exceptions, contraceptives are not used to correct a medical problem, but a social one. Erectile dysfunction is a failure of the body to act normally, therefore treating it is a medical procedure.

(2) Viagra enables men to give their partners the pleasure of vaginal intercourse, which many women want. It's therefore a benefit for women. But Viagra carries risks for men who use it - so in effect it's men who are making an (admittedly small) sacrifice for the benefit of women.

Edit: These considerations should be brought up whenever feminists use this comparison.