Often the faith in the future of bitcoin is not solid for traders whose entry was in a hurry, trying to catch the sudden profit. During such times they sell at a loss. This is why experience in other speculative markets and dummy trading in the past is needed to prepare a seasoned trader.
Traders may not feel the same way, because traders are not after making a quick buck, they are after making a huge profit and that is why they are not seeing this return. However, if we are talking about long term investors, they see a lot better in the future of crypto and that is why they believe that the investment you make right now, should be fine because we believe it will be higher eventually anyway.
If you are willing to hold bitcoin for 5 years versus max 5 days, then you will know the difference. So this dip, is a miracle for some people, miracle that they didn't believe it would happen and that is why it is loved by many so much.