To me this $12,000-$29,000 is the same opportunity we were all afforded when bitcoin was last "cheap " at about $250 in June 2015 and about $3,300 in February 2019.
I am one among who felt "I should have bought bitcoin or saved the bitcoin I earned in 2016 when it was around $400 and in 2019 when BTC was around $4k to $5k". I almost had 2 btc from earnings without investing on it. Current situation makes me feel the same but would let it go down to $20k to $25k. So I feel, this is the last opportunity one can opt more bitcoin.
There are probably a lot of people like that but since you cannot change what it happened then it does not matter, what matters is to try to get bitcoin for a relatively low price, just a week ago you could have gotten bitcoin for a price below 30k and it is fair to wonder if that is going to be the last time this is going to happen as the price is recovering once again and now there is a battle among the bulls and the bears to see if the price of bitcoin goes past the 40k mark.