You should not be thinking that Bitcoin has bright future, i want you to understand and believe that with Bitcoin investments your future is ever brighter and should know that buying Bitcoin aggressively depends on your discretionary income because Bitcoin goes along with the future from 4-10years, then from the discretionary income you can decide to increase or buy Bitcoin weekly or monthly.
If the goal is to buy Bitcoin to be stored for a period of time like you said, of course the person must have a steady income so that he can use a little of his salary to be used for buying Bitcoin every month. And I think it will be a little simpler for those who have a fixed monthly salary, but for those who do not have a fixed income every month it will be a little more difficult to make Bitcoin purchases in a more consistent way. Because most people will definitely prioritize their living needs before investing in anything in their lives.
All of that can still be arranged well if we have a mature plan to invest in Bitcoin with the DCA strategy which means we must consistently buy Bitcoin to continue accumulating Bitcoin.
Each of us must be able to manage our finances well so that what we invest in is never disturbed just because of reasons to continue life or the need for money in real life which is very important, therefore we must be able to manage our finances between emergency funds, education funds and also money to support our daily lives, the rest we set aside for investment.