Those who want you to doubt that anarchy (self ownership and individual responsibility) is the best, most moral, and ethical way to live among others are asking you to accept that theft, aggression, superstition, and slavery are perhaps better.
As a libertarian, you can be religious or atheist or environmentalist or vegetarian or whatever- and that's fine... but don't use libertarianism as justification. Because libertarianism has nothing to do with any of those things.
Don't initiate force against another human being. Respect the rights and the property of other people. Minimum government; maximum liberty. And within those bounds, the sky's the limit.