in the past, some newbies and unbelievers are questioning if people can and willing to buy Bitcoin at $20k or $25k, but look at what happened in the market, they bought they made a profit and continue buying.
Yes, people need to be positive and must try to sync along with the current trend of bitcoin markets. You may have doubts about other cryptocurrencies but there will be no point if you still keep doubting about the future of bitcoins. We must make use of all possible dips to buy more and I guess from here onward we may rarely get chances for grabbing lower prices.
As per OP, bitcoin may be a bubble but for the people who believe into the all potential of bitcoins, bitcoin's so far growth is real growth in ratio with bitcoin's power and potential. So, we may continue investing with bitcoin without hesitations.