I would not buy bitcoin now, because bitcoin is too high in my opinion.
If you already accumulated enough bitcoin (or more than enough), then you are in a position to wait.
If you have not accumulated enough bitcoin or more than enough bitcoin, then you might need to consider continuing to accumulate. Of course, since you have been registered on the forum since 2017, you may well be in a position in which you have accumulated enough or more than enough bitcoin. . That is surely for you to figure out.
Since he doesn't need Bitcoin, he has completely immersed/Saturated with himself in Bitcoin. Since he registered on the Bitcoin forum in 2017, he has been familiar with Bitcoin since before or since the price of Bitcoin rose from $1,200 in April to $14,000 in December 2017. If he had invested during that time, his Bitcoin would have increased hundreds of times, so there doesn't seem to be any need for him to invest in this high-profile market.