This. Bitcoin has crashed many times before and risen again but that hasn't stopped it from moving forward. Though I doubt it could crash to under 15-20K under current market conditions or under 10K in bad market conditions. What is more concerning is the possibility for price manipulation if large players sold all at once.
Bitcoin is a new asset class. You can't even buy it at the bank yet. There is plenty of room to grow.
Bitcoin is susceptible to mass-selloffs, because a large part of its circulating supply is being held by individual investors. And when compared to institutional investors, these investors are more susceptible to panic selling. This is the reason why the prices crash by 80% or more, whenever a correction happens. But the situation has changed now, with the entry of mainstream investors and Wall Street giants. That should add more stability to the exchange rates.