that the primitive Islamic savages prefer to cling to an ancient, nonsensical custom than adapt to modern and rational modes of thinking.

One of the basics of finance is that an investment, regardless of its class, changes in value over time with (1) the real risk-free rate of return, which compensates investors for deferring current consumption (2) inflation, which compensates investors for the change in purchasing power over time and (3) various risk premiums, which compensate the investor for exposure to the various risks. And all this has NOTHING to do with Western or non-Western culture, or anyone's damn religion. Regardless of how the precise variables may assume different values in different economic situations, this is a simple, fundamental and universal principle of finance and investment, and it operates on assets everywhere in the world. And all rational, thinking human beings recognize that. Crazy Muslims apparently do not.

One might as well cite the Koran in affirming that 1+1 = 3 and anyone who dares to disagree will have his head chopped off.