I am asked this question very often: why should we care about inequality? There are three reasons.
First, every inequality in the treatment or position of individuals – including inequality in income and wealth – requires understanding and justification, because we are all fundamentally the same. That does not mean we should all have the same incomes because our effort and luck may vary, but we need to think about the reasons for any and every inequality.
For example, we can adopt Rawls’ perspective – that inequality can be justified only if it is in the interest of the least well-off (that is, so long as it raises the absolute income of the poorest). Or we can agree with Hayek that inequality is acceptable so long as the rules of the game, such as equal access to the market, are observed. Or we can provide another rationale.
But no matter which philosophical opinion we find the most attractive, we have to address the reasons for the existence of inequality.
Source: The Guardian