Libertarians view of government is, 'I want to be allowed to do whatever I want while everyone else is restricted to doing what I want them to do.' It's a dumb ideology that falls apart with literally any amount of thought.
Libertarians who don't themselves do any drugs (eg, Penn Jillette) still want drugs to be legal for other people. Libertarians who are themselves pacifists still want gun ownership and self-defense to be legal. And so on. It seems to me that this view you think "falls apart" with so little thought doesn't have much to do with libertarianism.
No it isn't. You're either badly misinformed, or trolling. That is nothing like the libertarian viewpoint.