If Bitcoin really reaches $8000 then people's confidence in crypto currency will decrease a lot. Many people have already lost faith in Bitcoin because of some coin scams.
Many people may panic if Bitcoin drops to $8000. But that doesn't mean all people will begin to leave Bitcoin. For those people who believe in Bitcoin future, it should be a time to buy Bitcoin at a very cheap price. More drops, real Bitcoin holders probably buy more. By the way, I assume only people with a weak trust in Bitcoin who are worried about Bitcoin and think it to drop to $8000. While for people who are confident with Bitcoin, I am sure they never think that Bitcoin price to drop below $10000, even if it is not impossible.