Why? Because people are not hermetically sealed off from one another so that one person's irresponsible behavior affects him and him alone.
It doesn't too many failures to destroy the larger good others are striving to achieve.
That's one reason I live in a rural area. (Clean air and water, and lack of lawn-height ordinances are among the many others.) I can hang my big Old Glory on my front porch and not worry the least about anybody giving me sh!t about it, either.
> It doesn't too many failures to destroy the larger good others are striving to achieve.
The first place to Do The Right Thing is in one's own life, on one's own property, and figure out how to have a good life without overly pissing off the neighbors. Acting irresponsibly flies in the face of enjoyment and appreciation of true freedom. So while I agree with you, I claim that responsibility and self-discipline go hand in hand with real libertarianism, and those who don't bother to try to make it work are just in it for the good time.