Therefore doubling the amount to $200 per week (which would end up being $104k over 10 years) is likely to reach a whole bitcoin... but like you suggested, there remains a certain level of uncertainty, but it seems to me that if someone really has a strong goal and is attempting to take actions to follow it every week, then in those kinds of situations goals tend to guide towards exceeding the goals. That has been my experience. Another problem area is the health of someone, so if emergencies happen and a person who could previously work with his brain and/or his body comes into poor health, then sometimes they have to abandon their goals and to become more realistic which maybe results in a lower amount invested into bitcoin.
Honestly speaking, I haven't thought about this before. But this is true. Low health is one of the problems one consider first.
If someone has been trying his or her best to meet his or her plans to achieve something that will help them but suddenly he or she becomes mentally exhausted or ill, then I think health comes first. Without good health, one can not make up or achieve anything, and it might still cost the person to spend more or touch the savings he or she doesn't want to.
Most time one can decide to reduce the amount of money he or she put into an investment just because he or she wants to regain himself, but honestly speaking, I believe that if the same investor gets better, he or she can afford to continue the same way or above what he or she was putting into the investment (Bitcoin).
I think that my main point was that sometimes there can happen very negative circumstances in life in which a person may not be able to recover back to 100% and might not even be able to recover back to 50%, sometimes the situation could be physical in the sense of not being able to do physical work that might have had been part of how a person had been able to earn a living. Other times the injury or damage could be mental, in which there might not be very many physical requirements, but there are mental requirements, and sure sometimes brain injuries might be from having functional issues, but it could be due to injury or disease. So part of the point might well be that goals have to be adjusted, maybe abandoned, and sure maybe they might have chances to come back, but maybe not. there are not always happy endings, especially when we are referring to real life possibilities, and negative circumstances might not even result in death but just some kinds of disabilities that might be sudden or might have a slower/gradual onset.