I think buying bitcoin is stupid now. The price may fall lower especially if we take into account the deviation of bitcoin ETF today.
I totally disagree with you if you buy on long term. Even medium term. If you plan to hold your bitcoins for 5 years, bow and next year is best chance of your lifetime. What is left of your lifetime of course. You will never have better chance again.
Planing to hold for a long term is a good idea but it needs a lot of patience and some huge courageous nerves to fight with the time. By the way I personally like target based holding. It minimises the risk ratio as well as you are most of the time updated with with the events and occurrences to get a good view of the market. You get more opportunities to achieve your target.