Well, liberalism is steeped in idealism and forward thinking vision. We need visionaries to stir things up and make changes for the greater good, sometimes it is unrealistic, but always better than stick in the mud status quo. If we didn’t have liberal and progressive thinkers we’d all still be living in caves and pushing twigs into Termite mounds. You better believe it was a liberal that discovered how to make a fire and roast that mastodon steak inspite of the fearful protest of the conservative Neanderthals.
This is the way of the world, the traditionalists vs. the innovators, both have their merits.