You can buy BTC all the time when you are financially buoyant, don't forget that all investors are not equal in this industry, and it will be favourable to buy BTC in the bear run because there is a chance for investors to boost their profits in the bull season.
Financial buoyancy doesn't mean one is ready yet for investment. However, it is more a criterion to being any investment which is having the capital yet and stability to invest in the long term. Just because someone has the money doesn’t mean they should invest without a plan. A person should assess their goals, financial obligations, and overall strategy before investing in Bitcoin. Most persons who started investing a long time ago and held till this current ATH. It was not all about the finance alone but the goals they set for long term.