You pointed out quite a good point. But there's another thing I would like to point out. In as much as one has set aside funds for emergencies, upkeep, and the rest, also have it in mind that life can happen to anyone. You might lose your job, a very disturbing sickness can affect you, or unexpected issues may arise that will affect your plans, and so on.
So my point here is that the main thing for long-term successful Bitcoin investment is adaptability. And that's where I am driving at. Can someone adapt to any situation that will put him or her off balance in their DCA? That is the main aspect when it comes to the long term.
I believe every person about to invest in Bitcoin should be aware that life is always unpredictable but that doesn't mean we shouldn't plan for it. Of course emergencies are bound to happen, we will face challenges but with a well structured plan and if followed accordingly one should be able to survive through. Life itself doesn't come easy so long term investment will not be easy that's why we need to prepared to withstand whatever it throws our way.
This discretionary income you guys always emphasize on, I hope you know that to can have a discretionary income and make Bitcoin investment and still sell that part of Bitcoin you have right. Life is unpredictable and you don't really know what might happen. Sometimes you don't expect that the worst is going to happen, they end up happening anyways and you have to leave it because you never expected it. Some people did all these processes and sold their Bitcoin later.
I think one of the unspoken things about Bitcoin investment are the challenges that comes after the investment. Some people make all this arrange only to be hit by one sickness. They have to look for other means and ways to get money, even their investment are not enough to cure them, they have to borrow money from other place before they are able to fix their life together.
You have a point about unexpected things happening but a well structured financial plan while investing in Bitcoin is supposed to creates room for unforeseen circumstances. And speaking about sickness, not everyone faces this and the possibility of experiencing an emergency should not stop us from investing, life itself is a risk. If we face any illness we should make sure to take care of ourselves first because life is more valuable than your investment.