10. India

India’s sensory overload is legendary, and for Americans, it can quickly turn from fascinating to frustrating. Cities are packed, traffic is chaotic, and personal space is virtually nonexistent. Many travelers complain of pushy vendors, persistent beggars, and an overall lack of boundaries. Customer service is inconsistent; you may be treated like royalty at a five-star hotel but ignored at a train station. Americans also report culture shock around sanitation, infrastructure, and time management, which can lead to irritation. Haggling is expected, and if you don’t play the game right, you’ll likely be overcharged or dismissed. Rudeness here is often just a function of survival in an extremely fast-paced, high-density society. But for travelers who come prepared and patient, the warmth and hospitality found in homes and smaller communities can be deeply rewarding.