Another thing is that even if we might have an investment portfolio and we might not even invest aggressively into bitcoin, and maybe ONLY take a 1% stake into bitcoin, we still might end up with a good portfolio, but that is not guaranteed either, and I tend to recommend a starting out range of anywhere between 1% to 25% for a newbie into bitcoin, yet they still have to decide their allocation amount and their strategies in regards to how they get there.. if they might be starting from zero in BTC and then trying to figure out how they might get to their chosen allocation/target level, and are they going to lump sum into it? or maybe they will take one or two years to get to their target level, or maybe longer than 1-2 years.. depending on how much they might have in other investments (and how liquid might be those other investments).
That's very true, only 1% in most cases is enough to stake into Bitcoin, and few people will have good portfolio with that much of investment. But, a proper range to add into Bitcoin would be around 10% and more if you have firm trust on it and its potential. The 1% rule may not work for the ones who have very low budget and the best starting range for such people should be around 10-25% like you have suggested. It's always better to have a proper strategy when investing in Bitcoin. My investment strategy is simple because I think the best time to accumulate bitcoin is when the market gets a dip. The dips are actually best for increasing ones investment in Bitcoin and some good Altcoins because during the dips we can accumulate some extra worth of Bitcoin than their regular prices. And, if we start investing 10% of our income or capital into Bitcoin during the dips than our accumulation will be enough within 2-4 years that we can hold for a decade or two to earn good amount in profit.
Aside from Bitcoin and cryptocurrency investments I think one should still save the rest of the 15% for other assets that have the potential to be huge in future. The best investment in that case would be on a asset class that may grow to good price ranges in future. I think in my eyes gold has that potential and it can grow slowly but substantially in price in coming decades, and I believe that 25% of our earning should always be invested in something that could make our future life free from financial issues. The rest of the 75% are enough to enjoy the present moments of life, and to meet our daily needs. I think that way one will never have to be worried when it comes to financial needs. The investment in proper assets is the way to go and someone who's wise enough will always choose such strategy. It's best to have 25% of ones earnings to be invested in Bitcoin, some good Altcoins, and into an asset like gold or something else that has the potential to grow in future.