LOL
Do you really expect the airport to be in Beverly Hills? What other major cities in the US have their primary airport next to a "nice area"?
Chicago - far away from downtown
Denver - further away from downtown since they moved it
Portland - 30 min drive from downtown (if you're lucky)
Seattle - not even in the same city
Dulles - in farmland
Miami - if that area isn't sketchy, then what is?
DFW - not even in the same city
I could go on...
And didn't I mention changing terminals is horrible?
FWIW, I live in a "nice" area and it took me 35 minutes to get home from LAX - though if the roads are busy it can be well over an hour. That's life in the big city!
That's fine. But there are "easy" airports and "not at all easy" airports. OAK, SJC, LAS and PHX are all examples of easy airports. They're easy to get to and from the city they service. OAK aside, they're in fairly nice areas of town -- or at least close enough to fairly nice areas that if there is a big change in itinerary, there's someplace decent to camp. (Hofbrauhaus or Lotus of Siam in Las Vegas are ideal examples of "I don't want to spend airport prices but I have three hours to kill.) They're easy to get around once inside and through security. They have amenities which make sense for their location -- such as smoking areas for Las Vegas nicotine addicts.
And then you have the super easy airports -- always small venues -- such as GJT, EYW, or ASE.
And most US airports pale in comparison to foreign airports -- which boast non-stop light rail transit to "the good part of the city," food and drink which is not only tasty, it's often around the same price as what you'd pay outside the airport. Germany, for instance, charges the same amount for a beer no matter where the beer is purchased.
And even the big foreign airports which are a pain are less of a pain than the big US airports. I'd fly into CDG every day and twice on Sunday over JFK. PEK is far away from Beijing, but has a bullet train linking it to the city center. I'd take PEK any day over LAX or SFO. I can get to my favorite little town in Germany in 30 minutes flat after getting out of my seat at FRA.
And these are cities that never had the wide streets, open spaces and infrastructure that we enjoy. If they can make it work, why can't we?