As a theory it seems alright until it leads to MANY logical errors. People can easily associate extremists in a group and say they represent an entire group with collective thinking and that is wrong.
Collectivism is the opposite of individualism. Individualism was born partly from the Protestant Reformation, when Martin Luther said every man and woman needed to think for him/herself about "faith" and about his/her relationship with God. His 95 Theses "which while ostensibly aimed at the abuse of indulgences, were a covert attack on the whole penitential system of the Church and struck at the very root of ecclesiastical authority."
http://www.newadvent.org/cathen/09438b.htm
And then, John Locke wrote about natural law, and about how the state must be made of the will of the people who purposefully give some of their authority to the bureaucracy, and the state has no more power than what the will of the people give it. America’s Founders took from this the idea that if a man could give to the state some of his powers, then he already had them "naturally" AND as an individual. This meant he was an "individual sovereign".
"Individual sovereignty was not a peculiar conceit of Thomas Jefferson: It was the common assumption of the day…" http://www.friesian.com/ellis.htm
The 20th century anti-collectivist, Ayn Rand, wrote in the same language: "Individualism regards man—every man—as an independent, sovereign entity who possesses an inalienable right to his own life, a right derived from his nature as a rational being."
She also said, "Since only an individual man can possess rights, the expression “individual rights” is a redundancy (which one has to use for purposes of clarification in today’s intellectual chaos). But the expression “collective rights” is a contradiction in terms.
"Any group or “collective,” large or small, is only a number of individuals. A group can have no rights other than the rights of its individual members."
http://aynrandlexicon.com/
MY thoughts are these: I was born an individual sovereign, and therefore I can only become part of a collective by two means: by choice, which I would never do, or by being forced such as through communistic or fascistic actions of the state. I do not choose the first means, which is altruistic; and I do not accept that the state has the right to use force except to protect the individual sovereignty of its people, or to protect the right of the nation to exist without being threatened.