Funny what a ride it has been, but I wouldn't call bitcoin and investment at all. It is a bet, a bet that might turn a profit, but still a raw gamble. There are no sane metrics to use to try to build a risk profile for it, because it is a speculative asset. Nobody knows what is going to happen. It might hold steady, increase, or crash as soon as tomorrow. If someone tells you that they do absolutely know what will happen with bitcoin, that is an instant red flag that that person is full of shit. So, might be wort putting some money in if you want to gamble with it but let's not fall for hindsight bias. There is still no real end-user use case that isn't speculation for holding bitcoin outside of maybe paying taxes in El Salvedor, which I think has adopted it (alongside USD which is still far more widely used).