I think poster richcollins' definition of state socialism ("state socialism implies coercive sharing") is accurate and wonderfully succinct.

However, like it or not, we are born into a social contract. Those who want opt-out of that social contract are a bit like the child who, when faced with family responsibilities states: "I didn't ask to be born!"

Parent's response: "Sorry, thems the breaks kid, now go look after your brother and finish your chores."

While I enjoyed the Ayn Rand books I've read, I think it's a little naive to expect any large society to work on a strictly opt-in basis.