Laws such as this diminish women to second class citizens that aren't capable of making adult decisions. Women should be the first in line to get rid of this law.You're right. It's completely unfair, and there are other examples.
I have a friend who was recently on trial for rape because he slept with a woman who was too drunk to consent under the law in his state. When he mentioned that he was also shitface drunk, the prosecutor told him that being drunk doesn't mean he's not responsible for his actions.
On one hand, it pisses me off. On the other, the pendulum is swinging. Wasn't too long ago (I mean less than 40 years) that it was legally impossible for a man to rape his wife. Women are enjoying a period of being the ones favored by law.
It will swing back soon enough, and hopefully each swing will be less extreme.
Sean