Actually, libertarianism assumes people will look after their own selfish interests. Because interaction is voluntary in a libertarian society, peopl… - Mary Ruwart

We are more likely to protect the environment when we own a piece of it and profit by nurturing it.
*Whenever people do not pay the full cost of something they use, they have less incentive to conserve. For example, when people pay the same amount of taxes for solid waste disposal whether they recycle or not, fewer people are inclined to recycle. As a consequence, we have more waste and disposal problems.

Throughout the world, law enforcement has many characteristics of fourth-layer aggression. Police, courts, and prosecutors are often part of tax-subsidized government monopolies that we are forced to use. As with all such aggression, we end up with high-cost, low-quality service and little innovation. We pay too much for too little.

In a libertarian society, aggressors would be required to compensate their victims and pay for costs of their trial and apprehension. Studies show that such restitution is one of the most effective deterrents known.