Tesla's Model 3 is generating tremendous discussion about whether to reserve a spot in line, even with the knowledge that Elon Musk's new electric car may not arrive for years. For many company loyalists, it's a no-brainer for your budget and the environment. To skeptics, the Model 3 represents a dangerously risky bet that's been amplified by a ceaseless hype train. The arguments are flying back and forth on Quora. In their own words, here's why some people are dropping $1,000 on a car they haven't even seen yet, and others are holding back.