Is this the best time to invest in stocks, given that we know 'for sure' in a mid-long term, there will be significant capital appreciation (e.g. if we look stronger counters such as banks)?

Investing in stocks can be a good strategy, especially if you believe in the long-term potential of strong companies like banks. However, timing the market is notoriously difficult, and various factors can impact stock performance, including economic conditions, interest rates, and geopolitical events.

SingaporeChap is right.

Investing is about uncertainty.