Comment: The answer to your question

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The answer to your question

The answer to your question is a simple one: Because others are better at it and waste less time, labor, and resources.

Why didn't you build your own car? Cuz Ford is better at it.
Why don't you grow your own food? Cuz farmers are better at it.
Why didn't you build your own computer? Cuz Dell is better at it.
Why don't you knit your own socks? Cuz fruit of the loom is better at it.

Get it, now?

It's called "comparative advantage", and it explains how free trade DID make the world better. This isn't an opinion, it is a hard, irrefutable fact of reality that can NEVER be proven wrong. In fact, it is one of the foundational ideas of "modern causal-REALIST" economics. You know the economics that can explain why diamonds costs more than water, but water is more useful? You know, the kind of economics that explained the REAL world BETTER when merchantilism/protectionism/historicism FAILED to answer basic questions, such as,"why is gold so expensive, when iron is so useful?"

Reading material:
http://en.wikipedia.org/wiki/Comparative_advantage
http://wiki.mises.org/wiki/Comparative_advantage

...And here is one from a middle-school math text(yes, it's so simple that children understand)...

http://mises.org/daily/6342/

BTW, you don't have to travel the world to understand basic logical reasoning...... or math, for that matter, lol.

"I do not add 'within the limits of the law,' because law is often but the tyrant's will, and always so when it violates the right of an individual."