Shane, I'm quite well educated in "Libertarianism" and/or "Capitalism" as you're putting forth. As an anarchist I cannot advocate an economic system such as this as it's antithetical to personal autonomy and freedom as well as collective responsibility. Capitalism cannot exist without the State (as Chcuk said basic political theory) and Anarcho-Capitalism is an oxymoron at best. Both are systems of hierarchy, and are authoritarian where no-one is free. Capitalism is inherently exploitative and expansionary, is unstable and requires heavy regulation less it collapse.

As for myself...

Niether Slave Nor Master.

I'm not gonna regurgitate pages of whats already available but suffice it that Chucks links would be almost word for word what I would argue.

P.S. syndicalism is not the only way. I can imagine a world full of syndicates/federations, guilds, gift economies, workers councils ...I could go on and on but capitalism doesn't fit.