Earlier quoted context omitted.
> It's an animal product For which you don't kill the animal. > with the obvious ethics problems This may or may not be "obvious" decades or more in the future, but I think people who hold this idea are in the minority at the moment. > cow methane Point taken.
> For which you don't kill the animal. Milk cows are continually raped for the duration of their lives: http://www.humanemyth.org/happycows.htm
This is misleading and utter bullshit (no pun intented). By that reasoning, every routine examination at the gynecologist or proctologist would constitute rape.
We have no reason to suspect that a cow feels "raped" during artificial insemination, or anything more than slight physical discomfort.