Yes, holding Bitcoin for the long-term can be a good investment strategy for those who believe in the long-term potential of the cryptocurrency. It is true that the price of Bitcoin can be volatile in the short-term, but over the long-term, Bitcoin has shown a tendency to increase in value.
If you zoom out the bitcoin chart from it was created until now, you will see that bitcoin will always increase over time. And if you're an investor with a lot of faith in bitcoin, short-term volatility presents a better opportunity than a time to panic. Because every time bitcoin drops in price is an opportunity for us to buy cheap bitcoin. And that's why I prefer bear markets to bull markets.
Yes, investing in bitcoin might not be guaranteed but the risks are actually minimized as bitcoin is already a decade long and has been proven throughout the years compared to the other coins that got more risks as most of them are centralized. Altcoins are also good investments but we need to be careful from choosing which altcoin should we include in our portfolio because there dozens of them which are just too good to be true.
I also echo you on your statement that bear market might be a headache to some but I view it as an opportunity to accumulate more coins as long as we can afford it because when time comes that the bull season is emerging, we will enjoy the fruits of our labor or hold it as much as we can especially bitcoin.
Yes btc is the best investment. I also 100% agree that when general people panic the clever buy and when the confidence is high that is the best time to sell. To people wh know both bear and bull is money making time. Always swim against the tide and follow the whales.