Bitcoin investment, like any other type of investment, carries both potential gains and risks of loss. The price of Bitcoin can be extremely volatile, so it is important for investors to consider their risk tolerance and do thorough research before investing. Bitcoin has indeed generated significant interest and investment in recent years. Its decentralized nature and potential as a store of value have contributed to its popularity. However, it is important to remember that the cryptocurrency market is highly volatile and can be affected by various factors. It's always a good idea to approach investments, including Bitcoin, with caution and thorough research.
If we already know Bitcoin's decentralized nature and its potential as a store of value and its popularity has been proven over the years since Bitcoin was published on the market. I think there is no need to spend more time doing thorough and careful research when wanting to invest in Bitcoin in the long term, because the main thing from research is to know and understand Bitcoin along with market conditions. So our optimism about investing in Bitcoin should be much greater than our fear of market conditions which are very volatile and can be influenced by various factors.
You have a point there, bitcoin is like any other investment, it can bring profit or it can make us lose. So, just because we were lucky once to be able to make a profit from bitcoin and thinking that we can easily get rich from it is a silly and naive thought. Furthermore, making profit from bitcoin has never been easy, I don't know if OP's brother is lucky or he made money with his real knowledge. But given what OP is saying, I think he is counting on luck rather than being serious about his investment.
If OP only relies on luck rather than more serious knowledge for Bitcoin, I think OP will also not always get luck from his investment, considering that market conditions never settle in better conditions forever. So everyone, including the OP, still has to understand other knowledge about market conditions which often change every year so that they can always take advantage of the best moments when they want to invest in Bitcoin even though their dedication is for the long term.