[perilunar]

Is money being made? Seems to me that all trading does is just redistribute existing money, and no wealth is created.

What a waste to have all these computational resources engaging in a continual 'series of countermeasure/measure battles' instead of calculating something useful.

[aianus]

Trading results in price discovery. Accurate prices allow more informed investment decisions and the development of more real wealth. The alternative is something like a centrally planned economy which have generally been unsuccessful.

[TheAdamAndChe]

It may seem pointless, but trading like this is actually incredibly useful. It (mostly) removes emotion from the equation, thus lowering the chances of market shocks and decreasing volatility.