I tend to NOT like the examples of the guy who bought at or near all time high, and then just sits on his hands for a number of years, even though I understand the point that you are making Inwestour, which is that even those BTC purchases that were made at or near all time high have decently good chances of becoming profitable in the coming 5-10 years.. and perhaps (likely I would suggest) they will even be profitable in light of the likely ongoing decreasing value of the dollar (or whatever other fiat currency that you might be using as your measurement).  

Another consideration is that if someone had started buying BTC with a DCA approach at or near the ATH in mid-November 2021, then that person would still be in profits right now. For example someone buying $100 per week starting from mid-November 2021 have spent a total of $8,500, and s/he would have 0.3352 BTC - which would have a current market spot price value of $10,125 (based on a current BTC price of $30k), and the longer that the person has been in bitcoin, then the more likely that the amount of profits would be higher.  Of course, no guarantees in regards to how the long to medium term is going to play out, but there is a lot of value that seems to come from consistently buying BTC, even if there might be some lump sum investing and buying on dips that complement a DCA approach that focuses on ongoing accumulation over the long term. and perhaps even some moderation in the BTC buying approach in order to NOT overly extend yourself in regards to continuing to want to account for your own expenses, including potential emergency expenses.. which everyone likely has from time to time.