I think it is mostly greed that make some people make the decision of trading Bitcoin rather than investing and holding. They believe that investing is too slow and will not give the kind of fast profits they want hence they need fast way of making the profits and trading is one thing that looks like it holds the answer even though in the end it is not always as easy as it seems. Trading is very risky and something not meant for those who are not ready to lose their money. Investing on the hand, is more reliable in the sense that it gives the assurance of profits when held for a long period of time.
I don’t think it’s GREED that makes people trade, it’s the need or desire for fast money just like you said and their impatience to invest. You can say people lose money most times because of GREED, that I can agree. Even as bitcoin has aged and it’s getting more global adoption there are still people who are sceptical about investing. There are people who prefer to pay someone who says he’s a professional trader to trade with their money than invest themselves. No matter how much we sound it that trading is Risky, people are still getting into it.
Correct me if I'm wrong, but I believe wanting to make fast money qualifies as greed to me, especially in situations where making fast money is easier said than done just like in bitcoin investment, because investing in bitcoin will take a person years, at least one cycle, for them to actually make a reasonable profit out of it. so GREED has to be what makes people want to make quick profits from bitcoin, and it's that same greed that has lead to alot of the failures.