The dramatic improvements in lives came about at the time of the industrial revolution, which in itself was partially an engineering outbreak, but also an outbreak of the abilities to raise and organise capital that had been perfected by financing risky and long sea voyages, which, in themselves brought about dramatic lifts in quality of life. No finance, no 'new world', no USA.
I might add that 'capital markets' cover the entire span of financing, from angel investing to the big board in New York. The principles are just the same and the knowledge required is very similar.
You may dislike the capital markets, but you cannot deny that the rise in standard of living, technology and wealth is not linked to the invention of both structured lending, pooled risk/reward and ability to trade both equity and debt to other people. If you meld my thoughts with PG's discussion at http://paulgraham.com/gap.html you can see the rise in wealth and living standards happening in parallell along with the developments of structured and tradeable debt, invention of partial ownership and tradeable securities (share markets) and of pooled risk taking (insurance). I also recommend Niall Fergusons' 'Ascent of Money' for a good backdrop into how/why this is. http://www.amazon.com/Ascent-Money-Financial-History-World/d...
Again, you might dislike the role that markets have, but pretending they are some sort of bolt-on that could be disposed is very naive thinking.
Thanks for that Amazon link--looks interesting.
*http://en.wikipedia.org/wiki/The_Ascent_of_Money
edit: yes, some financial markets are indeed parasitic, this is often because someone got the public to guarantee for something. This has more to do with the political economy than financial markets per se.
That's why a market crash in the US throws the world into a financial depression: small businesses cannot get loans, governments and consumers lose confidence, jobs are lost, people starve.
Again, not to dismiss finance and capital markets, investment, etc. as non-useful. It's just that they are a very modern and recent invention, at best one particular tool, and only an abstract layer on top of the more "real" parts of human existance.
But as today's cities/nation states, at some comparable level of comfort and consumption, we cannot function without those markets. Hence why there are those of us who believe they are the foundation of modern society.