Will expensive gas and diesel and the rising cost of living persuade poorer Americans that their vote matters?

Could having an emotionless voice or face be a sign of something like depression, and how do you know if that's the case?
Why do some people argue that income tax is unfair, and are there alternative systems that might work better?
Is every human action ultimately driven by some form of reward, even unconsciously, or are some actions genuinely non-reward-based?