Mexico City is boring ?!?!?!?!?
He didn't even leave his hotel room.
The museums, the markets, the food, the dance, the Lucha Libre, the tequila and Mariachis, the parks, the architecture, the languages, the handicrafts, textiles, … shall I go on? Sure it’s polluted, but no worse than BKK. (Which is also a fantastic city, and similar in many ways to Mexico City.)