There is no evidence that Welfare works.
Again, I refer you to Tom Woods' presentation-
http://www.youtube.com/watch?v=bwEcH7HGSZY@18m
summary:
- From the start of the industrial revoution to the 1960s, Poverty rates fell from 95% to 14% in the absence of any large scale welfare programmes
- From the end of the 1960s to the 1990s, poverty rates then stagnated around this level despite social security spending quadrupling in real terms
Likewise, in this country, you can say that the NHS is a force for good, but how do you know that? It also drains every tax-paying citizen of resources that they would use to otherwise buy their own healthcare through the free market. Remember the broken window fallacy - that which is not seen. Health insurance is done a lot cheaper and a lot better in almost all other developed countries on the free market. What have you got against that?
Did Gordon Brown manage to reduce child poverty despite all his rhetoric and the amount of money he pumped into this anthropological programme of his?
As for developing countries -
the mistake is to judge them by the standards of the developed countries. Instead judge them from where a generation ago. Real wages have risen 5-fold in China since the early 1980s, and living standards have improved considerably. This wealth wasn't created by governments taxing the fledgling millionaires and redistributing it to the peasants; it was done through the forces of the free market.