It's questionable to base public policy on individual choices when the costs of those choices are socialized and the benefits of those choices are privatized.
Idealistically sound, but not realistic. Roads and cars exist to meet a need (individual mobility and mass transit, primarily). At this time, that need also serves the public, and it is disingenuous to say that roads only benefit those with cars. Perhaps some good public transit systems will come along one day that can make a meaningful dent in the amount of people who need to own cars. I'm still waiting for those systems, but I won't be holding my breath.
Also, as an aside, try riding a bike about 5 ~ 10 miles when it's 105 degrees out (pretty common where I live), or even hovering around zero (fairly common where I used to live). It's not fun, nor is it practical. It's a big part of why nobody does it.
> Perhaps some good public transit systems will come along one day that can make a meaningful dent in the amount of people who need to own cars. I'm still waiting for those systems, but I won't be holding my breath.
They exist in most of the developed world; North America is the major exception. All that's required to create them here is good public policy, which was the topic to begin with.
