Building an emergency fund before Bitcoin investment is a kind of security for you Bitcoin portfolio a d DCA jurney, because by having that emergency found, you will not have any pressure on your Bitcoin investment and that way, regardless of your overall income and cash flows you can comfortably buy and hold Bitcoin for long term.
Setting up emergency fund is supposed to be considered the right way to approach bitcoin investment, even if surely most people may not consider it necessary when getting started. But I still feel that our emergency fund need to come first before any other thing, because getting started with the hope of setting up emergency fund along the line seems very risky as we don't know when emergency issues will poop up.
A lot of newbies in Bitcoin investment have made the mistake of buying Bitcoin when they have no emergency found or even not having a good stable income to hold Bitcoin comfortably without exchange them when they hard pressure.
This is the reason why newbies need to learn from the starting, a newbie is supposed to know the right step to take to avoid going with the wrong approach. because most of the newbies weren't told about setting up emergency funds as most people are only interested in forcing newbies into bitcoin investment when they are yet to get the besic knowledge about bitcoin investment, this is the reason why I don't blame most of the newbies who have been going with the wrong approach because most of them can not be wise enough to make research to know more about how bitcoin investment works but they will be naive to accept whatever thing they're being told witout giving it a second thought.