The problem with "living wages" is the inequality of value for pay between what are currently minimum-wage jobs and other jobs that currently pay that "living wage." For example, if you instituted a living wage, someone flipping burgers is now making the same $16 that a more skilled worker, such as a technology or medical worker, would be making. So what's to stop the mass exodus of people from those fields to fill the burger-flipping jobs? If I could have a job like flipping burgers that had practically no responsibility and still make my current salary, I'd quit my current IT job in a heartbeat to go flip burgers. That's one less job for the folks that are already living at or below the poverty level.
On top of that, you want to provide universal healthcare. So in addition to paying someone $33K/year to man a deep fryer, either the employer has to start ponying up several thousand dollars more in employee health care costs, or the employee ends up paying more in taxes so that the government can provide everyone's health care (and has less to spend overall).
Meanwhile the only solution for the wage disparity is for everyone else's wages to also go up, which doesn't help the economy either, because it's just inflation. Wages go up, so prices go up, and everyone is back to the same place. It doesn't matter if the lowliest McDonald's worker makes $100/hr if a loaf of bread costs $78 and rent on a 1-bedroom efficiency apartment in the slummiest tenement in the ghetto is $8,500 a month.
Raising minimum wage is a zero-sum game. If you raise wages, then costs of produced goods and services also go up accordingly. That's basic Econ 101.
