Even if bitcoin's investment thesis is stronger today than it was 10-15 years ago, bitcoin still is not guaranteed to be profitable in the future, and every person still has to figure out his own level of balance in order to not reck himself in terms of overly investing into BTC, even if he might end up being correct about bitcoin price direction projection as being up.
This piece literally sums up the whole idea of investing wisely which is by investing an amount of money you can afford to lose. Investing with a sense of moderation. We need not put all eggs in one basket and by way of this in figuring out our respective level of balance to avoid reckage is by diversifying our investment to other physical assets within our reach that we know can be profitable in the long run. Now this doesn't mean that bitcoin doesn't have a bright future ahead to do better but it's just a way to guard oneself against future uncertainties everything being equal.
In these cases we really need to think about how to cope up with certain possible damage we can get if those expectation we got didn't came out. That's why its important for every holder to have emergency funds set in this situation so they would not feel broke when situation they expect didn't happen.
But we know bitcoin is a strong asset and supply is limited while demand is increasing each year so even if they say that its risky for us to invest since there's no assurance to earn there's still huge chance for bitcoin to pump up for more digits.
Even if they say that bitcoin is good to invest before while the price is so cheap still we can figure out that even by now bitcoin still a good asset to acquire since the limited supply feature is making bitcoin a unique asset to acquire.