Why does New York always finish up being destroyed in films?
Godzilla, King Kong, tsunamis in The Day After Tomorrow and When Worlds Collide, the ghosts in Ghostbusters, The Hulk smashing it up in The Avengers, aliens in Independence Day, Armageddon, a giant creature in Cloverfield, solar flares in Knowing, bad guys smashing things up in Escape From New York, missiles and mutations in I Am Legend, a comet in Deep Impact, more water in Domesday Prophecy and A.I Artificial Intelligence , giant flying robots in Sky Captain and The World of Tomorrow......
The simple answer is because it has a high concentration of recognisable landmarks, i.e. the Statue of Liberty, Empire State Building, Chrysler Building, Madison Square Garden, Central Park, Brooklyn Bridge, Times Square, Rockerfeller Plaza etc etc which serves as both shorthand for the trailer, as you know NYC is getting trashed if you see the Empire State Building getting blown up (again...) while also making it identifiable for global audiences.
A similar thing happens with other cities that get trashed in films, for example...
* Washington DC and the White House (Independence Day, White House Down, Olympus Has Fallen)
* Los Angeles and the Hollywood Sign (The Day After Tomorrow, San Andreas, Earthquake)
* San Francisco and the Golden Gate Bridge (Godzilla, X-Men 3, 2012, Mega Shark vs Giant Octopus)
* London and the Houses of Parliament (V For Vendetta, London Has Fallen, Reign of Fire, Independence Day 2: Independenter)
* Paris and the Eiffel Tower (Mars Attacks, GI Joe: rise of the Cobra, Cloudy with a Chance of Meatballs, Call of Duty: Modern Warfare 3, Battlefield 3)