[T]here are two justifications for [liberalism]. One... is pragmatic and the other... is moral. - Francis Fukuyama

[A]fter World War II, liberal rights were not something that were only deserved by white Europeans. ...[T]here was a recognition that the black and brown peoples being held in colonial bondage could not consistently be held in that bondage, because liberalism was a universal doctrine. ...[T]hat's the other respect in which we can defend liberalism, a moral one.

[I]dentity is something that is universally desired by people. In a liberal society... people can associate based on... identity affiliations... and that they're free to do so... [T]he danger... resides when the state begins to endorse identity categories as... fixed... and then to distribute resources or... access to institutions on the basis of those... That's the point at which... you risk... hardening these notions of identity into self-regarding groups that are living next to each other... In the UK you get state supported religious schools... for Jews, for Muslims, for... other faiths. People should be free in a liberal society to set up private schools... to bring up people in a religious tradition. I don't... see why the state ought to be supporting that, because what you don't want to do is to have... young people educated in closed communities where they have nothing to do with people from other communities. ...[T]hat's fundamentally illiberal... [T]hat's... a mistaken policy that's... going to harden those divisions rather than to encourage a more... open and tolerant society.

So let me start by just going back to basics in explaining why liberalism is a desirable form of government, or set of ideas to live under... [T]here's basically 3 reasons. One is practical, one is moral and one is economic.