You are right I will love to add that Emergency funds should not be tampered with or used for your needs, and being replaced back. Emergency funds is always there as stand by at all the time and not to be spent only when a real emergency happens that needs to be taken care of immediately if not it will worsen the situation of things that will lead to more damage . For instance, if you lost your job, or the roof of your house was pulled of by storm. You can rely on your emergency funds for the mean time till you get another job, so that you don't sell your bitcoin to survive during when you don't have a job. Your income should be divided, whereby you have set aside for your needs.
If a real emergency happens, and you use the funds like the example, I gave above, when you get a new job, you can then replace/build back your emergency funds. This is why we should have a good size of emergency funds, so that whatever emergency that happens, it can sustain us. It is also good because that is what will also consider how aggressive we will be when accumulating bitcoin through DCA in a particular time.
Seems we have a little difference in our ways of viewing the emergency funds, and you are obviously viewing it from the negative aspect only which involved threat to life. This is not what I understand the emergency funds is meant for. I see emergency fund as money kept for unplanned events not covered in personal planning of expenditure. Emergency funds can include unplanned visit of a relative, support to a friend that is in desperate need of help, buying something that becomes important which was not initially important,
This is the reason why you need a reserve funds and floats. Reserve funds is the backup to your emergency funds so that you do not tamper with your emergency funds until an emergency occurs. Reserve funds or float can be used to take care of what you mentioned above.
indeed it could come in different ways and not only when threat to life is involved. Loss of job which is in other words loss of the source of income is a different ball game because in such situation, the emergency funds may not be able to cover your needs such as rent, feeding, medical, etc and still allow you continue to DCA as you were doing when you had the job.
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This is where your emergency funds comes to play its role. This is why your emergency funds should be up to 3-6 months of your monthly income put together, and it should be in cash to enable it sustain you during a very difficult or critical times like losing your job. When you have lost your job, you will be surviving with your emergency funds until you get a new job and because you know that you will not want to sell part of your bitcoin, you will get a job fast to make sure that your emergency funds does not dry up. When you have gotten a job, you can start refilling back your emergency funds gradually from part of your discretionary income.
If you have lost your job, you will not be able to DCA again because they is no discretionary income. All these should be put into consideration on you are on your bitcoin journey to avoid confusion when such situation befall you, if not you will sell your bitcoin forgetting that you can manage with your emergency funds when you have lost your job before you get a new one.