"living without sacrificing oneself for others"?
Parents sacrifice for their children everyday, that's wrong in your 'libertarian' book?
Who's to say it wasn't 'earned'? Random acts of kindness don't exist in libertarianland? Libertarians wouldn't help an old lady cross the street because she didn't earn that assistance?
We are here to do good - a man should be known for his good works, and if we can't do good, then we should avoid doing any evil. But to intentionally avoid doing good when the opportunity arises is to deny one's very self from experiencing the joy of selflessness.
This is the first time I've ever seen libertarianism explained as a selfish, self-absorbed state of being.
You've just earned a downvote from me.
If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy.