>>1. A woman does not have to be aroused to lubricate. They can lubricate merely as a response to penetration, a bodily defense mechanism from harm.<<
And you don't need to use your hands to wiggle your ears. People can wiggle their ears without using their hands.
About as common I suspect.
>>2. It is very difficult to deeply penetrate a woman if she hasn't lubricated, and I imagine it would hurt the man as well. I doubt he would be able to finish the act if she didn't lubricate.<<
Since there's so much bitching about not enough foreplay, I doubt that is true.
>>3. There are alternatives to vaginal lubrication, such as saliva. Also, saliva is intended to neutralize the acidity of the mouth.<<
I could argue that one but we'd both get banned.
The core joke of Hitchhiker's Guide to the Galaxy is that of course no civilization would develop personal computers with instant remote database recovery, and then waste this technology to find good drinks.
Steve Jobs has ruined this joke.