The thing is, when in a downtrend, I don't see others having high odds to double like Bitcoin. And now, in an uptrend, I see many tokens having high odds to halve compared to Bitcoin. Maybe altcoins have a chance to multiply by 5 as you said, but they also have a high chance to divide by 5. And how will you know which altcoin will increase or not? So, I think don't go all in on altcoins. Just allocate around 1/4 to 2/4 of your portfolio.