Simple deal, we make markets and provide liquidity which mitigates risk for the more conservative hedgers and investors. I return for that, we reserve the right to make a profit. If you believe in capitalism and markets, there is nothing to defend.
I can see the value to a developing trader as it holds them accountable with constraints not necessarily present in a private account. As far as the monetary issue, if you can't be profitable on 1 contract, you won't be on 25.
There aren't enough college students and hard core lefties to elect him. Hillary will be the nominee unless she is indicted, in which case the Dem's will drag a moderate off the shelf like Uncle Joe.