It's sad that you are being downvoted, for what you say it's pretty correct.

A lot of people don't understand the reason why financial markets were created and why they continue to exist.

There's a really good book called "Against the Gods, the remarkable history of Risk" which gives a good account on an aspect of why financial markets exist.

Basically, parts of society want to advance things (technology, arts, medicine, etc) but that same part doesn't have to carry the risk of doing their project. Financial markets are there to transfer the risk to people willing [able] to take on it.

Credit and Risk are two tools that have influenced the progress of civilization so much, its crazy.

Sure, there are people that abuse financial markets, the same way there are abusive people in Tech, Arts, or any other human endeavor. But that should not disqualify the whole system.