You seem to be describing discretionary income differently than what I am used to, especially since discretionary income is that money that is left over after expenses.. but at the same time within discretionary income, there may be various kinds of things that a guy might want to do on a regular basis.
For example. a guy might:
earn $900 to $2.7k per month with an average around $1,600 per month,
his expenses might be $1,100 to $1,500 per month with an average of $1,200,
so his discretionary income varies between -$600 and +$1,600... and the average is that he usually has around $400 per month of discretionary income.
The guy likely has to completly keep back up funds for the months in which his income is $600 less than his expenses, and even if he prioritizes investing into bitcoin, and he wants to tryto invest $50 per week into bitcoin no matter what, he may well have to make sure that he has enough cushion funds for that. He also might like to spend around $100 per month on various recreation activities that he has, and he consisders these activities to be important to his psychological and/or social health, even though they are optional.
The guy can budget within his discretionary income if he chooses to invest more than $50 per week into bitcoin, especially during months that he has more income.. yet he still might need to take some time to build up his emergency funds and/or otherkind of back up funds, and surely his emergency funds for three months minimum would not be built based on the average or the minimum expenses, but instead build upon the maximum expenses. so his emergency fund should be at least in the $4,500 territory, even though he does not need to build such emergency fund prior to investing into bitcoin and he can build his bitcoin investment up while he is building up his emergency funds and any other back up funds that he might choose to build up and/or keep.
i so much love the way you have taken time to analyse discretionary income.i quite love the steps you have described by using figures
given more clarity and,makes it easier to be understand. so many individuals fails to understand that it is really important for one to set a balance between having an emergency funds and bitcoin investment lets assume an individual who's monthly Income is within the range of $1800 on average and the person decided to be keeping $50 on weekly basis to be invested in bitcoin, this will definitely be a great goal and such can be realisable, however from what you have said without a good support or cushion this will definitely be disastrous that is the outcome may not be good when emergency or unforeseen contingency arises.
I so much love the part were you made mentioned of how crucial it is to budget for physiological and social well being, like $100 per month on various recreation.
I believe mental fitness should also be included as part of our financial goals. also targeting $4500 as our emergency funds relying on maximum expenses is achievable and obtainable.