Why do humans think that multiplying like a plague to the planet is "beautiful" when it's literally just cancers destroying the planet?

Based on someone’s appearance, can you tell if an immigrant came to our nation by choice or by circumstance?
What are some arguments in favor of the American tipping system that might appeal to a British person?
How did veterans who experienced the Vietnam War describe the challenges of entering combat without any established camaraderie or support network?