I actually don't quite agree with this. What a wall street guy might call "emotional" investment, I would call "fully informed, big picture" investment. Those who get mired in balance sheets and don't see the forest for the trees, don't see the vision, the passion of the customers, the passion and desire of the public, the inevitable future of mankind, etc. etc. etc., are missing out on all the best reasons for investing in a company. I do not consider these to be "emotional" reasons, but some might. It certainly sounds emotional when I talk about it right now, right? But no, these are rational decisions which I've come to from understanding trends in energy and transportation, the importance of customer loyalty, so on and so forth. I think all of us have similar reasons. And a lot of us saw these reasons before the world did, and that's why we managed to beat the rest of the world to the punch. To those who missed the boat, they can rationalize it by saying that we all just got "lucky" with out "devotion" to the "cult," or they can be realistic and understand that they missed the boat because they didn't see the signs which were right in front of them. But if their general MO is to look at balance sheets and not see the big picture, then, well, they're not going to just start now. They're going to keep thinking the same way, and try to come up with some way to rationalize their previous position.
I agree with all the reasons that you listed, why are we invested in TSLA. However I am also aware of the possibility that my judgement could be clouded, and that my attachment to this stock could be causing bias. That might cost me a lot of money, and I am really keen to at least preserve my money.
It might be an idea to actively seek to uncover bias, as I assume the bias in this case is likely to be unconscious. There are many ways to overcome bias and I will be thinking of more ways, maybe someone else can contribute more ideas.
TSLA longs mostly talk of the reasons why they are long. If we reverse the thinking and start seeking reasons to become shorts, at least that could be a start. I have long term prospects in mind, as considerations for short term stock movements would be quite different.
It might help to lay out the reasons that would change us from longs to shorts, long term. Once reasons are out, it might be easier to scan the environment for the listed reasons and if they are spotted, to act on it.
So here is what would make me change my mind on TSLA prospects:
1. Elon leaving or selling out
2. Significant inside sales
3. High Tesla employees turnover, with stories coming out of bad working environment
4. Model X flop
5. Gigafactory significant troubles
6. Model no name flop
7. Significant recalls
8. Rising costs, no profitability
7. Credible competition
8. Google comes up with a flying car or personal gear for flying at high speeds