We would have to earn quite a bit more money than we currently do. But there are more opportunities to do just that in the big city. And while some things would be quite a bit more expensive, other things would be less so. Such as being able to bicycle or take public transit anywhere we needed to go.
The ability to move around as we pleased was one of the goals of many of the major life changes we've been making over the last several months. We're not exactly to that point yet, but we're awful close. So moving to the metro would not be an option for a while yet, at least we have some things to think about.