Dont lie to yourself. Everybody is worried. At least everybody who cost-average on it.
Anyone with significant exposure to BTC should be worried. We just spent 8 months ranging, then violently broke down. Nearly all buyers this year are sitting on losses.... that's a huge impediment for price. Bounces will be sold into.
My cost basis is actually negative (taken out more than put in), but I'm worried too. Given time and volume considerations and based on past bubble crashes, price could drop in half from here pretty easily. Trading in the $6,000s was comfortable, but the closer we get to 2013 price levels, the scarier this gets.