Ideally, the stock market should be an open, visible and free agency for the population to invest in and gain returns from supporting publicly traded businesses.
I just think it's far too unregulated (or perhaps, improperly regulated is the right term) to operate in that way.
Now that trading is moving to "dark pools", things seem to be moving in the opposite direction.
Another aspect of dark pool hate is the idea that market impact can be reduced by selling through them as opposed to on market. If you're a speculator, this can be good or bad depending on the side of the trade you're on so probably evens out to a wash. If you're a long term investor, this is also a wash since you shouldn't be concerned about short term volatility (or lack thereof) of your investment.
What exactly do you take issue with when it comes to dark pools? what problems do you think they're causing that outweigh the very real benefits to market participants I listed?
My whole comment was that they make stock trading the opposite of "open and visible", then you come along and tell me that I don't understand what a dark pool is...
That's exactly what a dark pool does, you just see that as a good thing because it benefits investors. I'm more concerned about their effect on the other 99% of the human population.