My reaction is still same when Bitcoin price still $20K because I already expect Bitcoin would go lower since this year and the next year might be the worst before Bitcoin make new ATH on the next few years later. It's nothing surprised if Bitcoin price decrease, actually everyone must know it since Bitcoin has a high volatility and anything can happen in single day!
In future, when Bitcoin crosses $100k, nobody will mind about $4,000 in difference between $20,000 or $16,000 entry prices. Is what I say true? At that time, people just hope they can travel back in time, to buy Bitcoin even at $50,000.
I am a bitcoin holder and I don't care about bitcon price movement, we are currently in a bear market and I believe this is the right time for everyone who hasn't bought bitcoin or hasn't bought enough bitcoin to do so, bitcoin is very cheap now any extra money I have I use it to buy bitcoin and am ready to hold for long term, even if bitcoin keep on dumping, I will keep on buying because I know bitcoin will definitely bounce back, but it may take time, nobobody knows when it will bounce back so we just all need to have patience.
Bear market is good to DCA Bitcoin especially in a bear market which lasts about a year like now. This bear market is not over and price can be lower than now but we are in or very close to the bottom area.
Time to DCA with Bitcoin and hodl strong. After you buy it, you should ignore short term movements if you don't have strong mentality because if you overlook at the market, you will panic sell.