Well, I invested in Bitcoin when the price was $4600, then it started to drop the day after. It didn't stop until it hit $2900. If I was a short-term trader, that would've been an unfortunate time to invest. Look at the price now though, a month later.
Everything you're talking about has happened in a very short period of time, so I don't really get your point here. Long term in my book is when you hold your coins for at least a year or two. If we look at the time frame you bought, when the price went down, and when it recovered to where we stand right now, it's extremely short term.
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I constantly see people say that they believe in Bitcoin, but how can someone believe in Bitcoin when they don't even know what it is? In this case it perfectly shows that OP doesn't really have any confidence in Bitcoin at all. Any person understanding what Bitcoin is capable of, will not wait with buying themselves into this market, even when the market has gone up quite a bit already. In this case, you're better off not buying yourself into Bitcoin at all. Only invest money into something you know what it is, and that clearly isn't the case.