I don’t disagree with that at all—that’s the ideal. But I don’t know what version of the United States you’re living in, but in mine, most cities don’t have that infrastructure, are too politically incompetent to be able to build that infrastructure cost effectively, and most of the few cities that do have it (like DC and New York) have let it decay to the point where it’s not timely and reliable.

One of the things transit advocates fail to grapple with is that our municipal political systems in the United States are broken. When it costs New York City 5-7 times as much money per mile of subway as it does Paris or London, you can’t build enough subway to meet peoples’ needs. (The debate over transit would be totally different if, for what MTA spends now, it was building five times as much track to meet peoples’ needs.)

Who would run the transit that goes from the edge parking lots to the city in your hypothetical? It would be WMATA. The same organization that, despite ample funding, let DC’s Metro decay to the point that they had to turn off automatic train control—a feature that was designed into the system at inception in the 1970s.

That’s the political reality we have to design our transportation systems against. Looking over the pond at what they do in Amsterdam or Paris is foolish—it’s like designing a plane for earth’s gravity based on what it would take to fly a plane on Mars.

Not all of the mass transit in Boston is weather protected. Snow routinely causes train stoppages. The lines are also really old, being dug by hand when street cars and horse and buggy still existed. There's also the face of massive cost increases forcing people to take transit and park, not to mention the increase in commuting time by not getting directly to your location. I've been on some really great transit systems in places like Bucharest and Tokyo. Boston is an unfortunately poor comparison on some lines.