Why do you guys so vehemently commit to buy and hold, only to blow it when it's at the very bottom and sell?

If you committed to buy and hold on the way up, what it SHOULD mean is that you have already psychologically braced yourself for any sort of drop like this. You've probably decided you're not good at day-trading, so you hold. The problem is it's very easy to commit to buy and hold when it's going to da moon, but will you maintain that sort of mentality when it is dropping like a stone? If you cannot do so, you should probably have cashed out enough while it was going up so that a drop wouldn't crush you. You know it will go down eventually, whether it be in a bear trap or a crash, so if you really want to stay in bitcoins, just save the proceeds from your bitcoins until it goes down, then buy some more.