I get this concept but there are also risks to weigh up. As much as we might hope and expect bitcoin to succeed, there is still a possibility it doesn't, or more likely, that it does, but something goes wrong for me that means I miss out. Such as human error, tragedy that demands cashing out at an unfortunate time, orwellian state interference, etc. And those potential risks give me reason to diversify into assets I don't expect will do as well as bitcoin in the long run.