I ought to be ashamed of bringing up healthcare as an example, but when ESR talks about fetishizing socialism I am reminded what the market-heavy healthcare system in the US can lead to.

The medications I need to stay alive, with relatively common medical problems, are so numerous that I cannot see any rational insurance-based operation, free to make the choice, being willing to take me on. Remove that freedom, and you take that first step in the direction of a tax-funded, socialist, system. But, unlike insurance, a tax-based system charges people according to what wealth they have, not what health they have.

Is it safe to mention what Marx wrote about ability and needs. It sounds a very Christian principle to me, unlike the rabid dog-ead-dog market-space of extreme libertarians.