Gunfighter,
1. Birth rate argument is bullshit. There are 350 million people in the United States. I wouldn't worry about the birthrate.
2. If a woman gets captured by the enemy, they could possibly be tortured or executed. Same as a man.
3. Last I checked, chivalry isn't part of basic training. I've never met a soldier who wouldn't take a bullet for his best friend, regardless of whether it was a man or a woman, in a combat zone.
4. Pads require logistics, but so does food, ammunition, personnel, you name it. If the US Army can fly some shitty musician from USO to the front lines, they can do the same with a tampon. These can also be improvised pretty well from basic supplies; say, a few pieces of cloth. Non-essential.
5. Like I said in my previous post, if a woman can't pass physical qualifications, they don't join. If they can, they should be able to join. Not much of an argument here.
6. Men can have emotional problems due to relationships just as easily as men, who can also have compromised emotional integrity.