If I have a condition that is resolved by standing upside down on my head, and I invent a 100 ways to balance my body on my head and explain the reasons for each of them, it doesn't mean that standing on my head is a good or sensible thing to do. And none of them address the core problem that is the condition that requires me to stand on my head.

Look at why shares and the stock market were created in the place, and how many layers we laid on top of them and made the means the end and the purpose. If it takes you more than 2-3 sentences to explain something that's purely invented by humans it was probably silly to begin with.

Like the other day I was just watching a video about UTF-8. It spent a good chunk explaining all its various quirks and rules and workaround that all went back to how ASCII was dumb in some of its choices in the first place and now we're stuck with that forever.

About the only good justification you have is HFT increases liquidity but that is not good enough for all the wealth HFT extracts from the market.

and lIqUiDiTy!