You know what you must know is that people don't usually know when to invest, how to invest and when not to invest. Usually, investment is when you are financially stable to make it reality but most people nowadays jump into investments without at least having source of income or something that would give them income when they are in need or lacking moment.
It's true that everyone out there loves investments but getting to know the rules of investment is what most people are lacking, that is why many people faces hard time with their investments or ends up pulling off their investments when their time isn't yet to come.
attleast an investor should got some source where he can consistently lay hands on to service his investment no matter how small it is,
Something like this is greatly needed for any investment to flourish, that's why in Bitcoin investment, reserve or back up fund's are part of the plan, because it helps you to react in some certain market conditions, like buying aggressively during a dip or used to sort out some bills that would have warrant you to temper with your emergency funds, but with the availability of reserve funds you don't need to do that, you will only temper with your emergency funds when faced with real life emergencies.
starting is good no doubt but sustenance is very much excellent because that the very smart way to go about the investment,
Yes, you are absolutely right, sustainability is the primary purpose of emergency and reserve funds, because if both of them are not their, it will only be a matter of time before you temper with your Bitcoin investment.