There are undoubtedly appealing aspects to leftism.
But knowing the damage it does, and where it must ultimately lead, integrity demands saying no to it.
And i'm trying to say that merely saying 'no' to it might not do anything if liberalism is the mere superstructure to a more fundamental economic base. See: http://en.wikipedia.org/wiki/The_End_of_History_and_the_Last_Man
I don't agree that purely material concerns (this is essentially Marxist thought) are the prime moving force of societal development, even though they are important. A lot of our political systems exist simply as a response to unmanageable systemic complexity exacerbated by technology that leaves our biological nature far behind. This is not a technophobic argument, but liberal democracy is essentially just the managerialism that you could expect to occur with an increasing scale of society (whether real or theoretical), with the ideological post-Enlightenment element of people getting a voice.
Human relationships are even more complex than this and cannot be handled by the same means; even the managers are human with human failings. Although I am not making a traditionalist argument, traditional systems, though they may be non-rational, at least have passed the test of history in this regard. I don't doubt that they would curtail the material growth of a community as they are much more inefficient, however.
Singapore is an example of a "democracy" that attempts to deal with the human part of it as well, but fails spectacularly. From an economic perspective they are quite successful. The argument against liberalism etc. is not only that it is bad now, but that it is ultimately unsustainable and will collapse.Edit:
I have not read the book linked... but the pronouncement seems to smack of utopian idealism. We did it guys! End of history! In this era we have transformed! It just sounds like a liberal fantasy, I may be wrong.
Hey if I start to post mystical gems of rhetoric in the middle of intellectual arguments, does that mean I get to ban people when they inevitably insult me?