While well written that doesn't explain the ATV driving scene. It's a poor explanation that this supposedly principled man was so disillusioned that he kills a pre-warp civilization and violate General Order One/The Prime Directive. I appreciate that Picard never gave up but let's not pretend that he deserved some great accolade. The point of the evolved humanity was to give to the society and better oneself and humanity. If Picard was dissatisfied then walking away would be appropriate as he had already given his all.