A re-read of Libertarianism - a Primer

I've just re-read Libertarianism - A Primer by David Boaz. My reason for reading this book a second time was as a part of my educating myself with the writings fellow Libertarians.
Although it was a second reading I still enjoyed the simplicity of the book. The primer is definately the sort of book one would give to someone who is wondering how Libertarianism is, in fact, more beneficial to those we live among and to those we do not know.
CRITICISM
Having read the book again I guess criticisms are inevitable. David's outline of Civil Society is wonderful, but surely Libertarians can choose to create families of choice not just those we are born in to. By this I mean we don't have the choice who are parents are, we do have a choice of whom are friends and perhaps our surrogate family could be.
All families, genetic or created, can be as supportive. To me David seems to feel that the more traditional path (the ma and pa genetic family) will somehow make society stronger and more supportive. He bases his arguament on the historical evidence that families looked after one another better than the state ever could. I agree, but I think how that family is made up could be less important.
I've spent a lot of time in communal households. Although the households occupants often deluded ourselves that everyone was equal and that everyone had equal opportunity to decide what was done, what food was bought etc, the reality was it ws usually the same people who performed specific roles in the household, we seemed to manage and support each other as a family of sorts. Of course the households I belonged to do not exist now, but I am friends with some of those people still and we can rely on one another if the need arises. I am not saying that communal households are a replacement for the family, but I am saying they should have equal status when they have equal responsibility. One tip to Mr Boaz, try not to fall into the trap of attacking single mums/dads. They are an easy target.
The poorer members of society have always been easy targets. It was not so long ago that poor parents were attacked for having too many children. I don't mean to claim social security, this was way earlier than that. The reason that the poorer families at the time had more children was they needed enough children to survive in order to support each other as infant mortatlity was a lot worse than it is today. Attack the system that fails them, attack the systems that seeks to trap them.
Having criticised some aspects of the book I have to say that the good far outshines the bad. It is a book to share with those of your friends who are looking for decent political solutions.