From a value-holding standpoint, since BTC's value has already dropped about 80% during times in its history (like mid 2014 $1200 into 2015 $200), it's been pretty tested. If people were willing to hang on to $200 and hold through it, the latest spike has only brought new holders into the fold that will sustain higher lows. It's here to stay, and it brought some friends with it.