Every price drop favours real investors and allows for greater profit. Bitcoin could always fluctuate, but the hope of rising above where you met it is the driving force behind every successful investor.
Why do these things matter to someone who has a longer investment timeline? you seem to be both presuming some kind of advantage to buying dips or that a guy will be able to buy dips rather than getting himself into a position where he is constantly waiting for dips that do not happen, and sure there are good feelings in regard to being in profits, and perhaps there even might be some presumptions that if we invest for 4 years or longer then it becomes more and more likely that our bitcoin holdings are going to be in profits, since if we consistently invest into bitcoin for 4 years, then our cost per bitcoin will likely end up being right around the 200-WMA, and most of the time, historically, bitcoin's price has been higher than the 200-WMA.. yet if our investment timeline is long, then we likely are not maniacally focused on our profit levels, but instead we may well want to feel assured that we have enough bitcoin or perhaps more than enough bitcoin if we might start to employ practices of sustainably withdrawing our bitcoin.
Based on my experience, It’s proven that you will stuck on the thinking that price will keep going down if you will always pay attention on the price dip for buying.
I always feel before the fear that Bitcoin will still fall after waiting for the price to go down to my target buy price. In the end, my mind is my enemy by giving me fear to keep waiting continuously for the right timing which will not happened in reality.
Buying Bitcoin whenever you have spare money for long term purposes regardless the price is the best way if you want to efficiently invest on Bitcoin.