I would not agree completely with your statement that "women are all whores...", but I would agree that most women do want something more from sex than what marriage provides. I have yet to meet the woman, who, if she was completely honest, could convince me that being fucked by one man, over and over for a period of many years was so sexually satisfying that she did not wonder if she had missed out on something.
I do understand your need for your wife to fuck with other men while you're away. And if she doe, I also hope that she will be able to share the details with you, so that when you resume fucking her again, it will be even better for you. Myself, I love hearing my wife tell about the other men who have fucked her, both before and since she met me.