I think, everything can happen, it is possible that the price of Bitcoin falls to this level. However, it is not a problem for long term thinkers, we purchase Bitcoin at a reduced price and lower our average purchase price.
As far as i know, there are no countries that prohibit the purchase or sale of Bitcoin except a few countries. Bitcoin worldwide is legal. I think it is exaggerated to use Bitcoin in illegal transactions. Criminals are trying every possible way to commit a crime. Criminals sometimes use Bitcoin, sometimes fiat money, and sometimes gold.
Yatırımın tutarı kaç lira olursa olsun yarısını en azında çeyreğini bi kenarda tutmakta fayda görüyorum, hele de başka mal mülk yoksa, zorda kalınca nakitten ekleme yapılır, tümünü birden atsan kriptoya düşüş olsa bekle dur kâra geçmek için.