For those who are going for longterm they can buy at all time , no need to wait because the value of bitcoin and won't be the same in the future.
Long term investors do not need to focus on price they can invest anytime with DCA method. Short-term investors focus on price. Short-term investors can be compared to traders because they wait for prices to fall and sell when prices rise. Investing in Bitcoin should be long-term. Some short-term holders will regret it at some point in the future, when Bitcoin hits $1 million. So investing in Bitcoin should plan to hold for the long term.
At some point in the future Bitcoin will be worth $1 million which some new investors cannot believe. They only think about the past they don't care about the future. So if you want to succeed in investing in Bitcoin, there is no substitute for long-term hold.