This is absolutely right i do advice when investing in Bitcoin always invest in what you can afford to loss don't ever use emergency funds or borrowed money or ready the volatility of bitcoin has said it all that any one depending on short term hold it is a risky movement and an
financial obligation
Using one's emergency fund to accumulate or buy Bitcoin is just like going to commit suicide because definitely you won't go any far in the investment. Anyone who uses his or her emergency funds to invest,
the volatility of Bitcoin will humble the investor because that is not the right way to invest in Bitcoin.surely using emergency fund to invest in bitcoin is not advisable as that will be creating a loop hole that will affect such person if not replaced as soon as possible, but surely this got nothing to do with volatility as you have said @sotelorene. volatility is a normal casse when bitcoin rise and fall. the only problem in using emergency fund instead of discretion, is just exposing yourself at risk of not having enough emergency fund, which if any unforeseen contingency should occurs will prompt you to dip dive into your bitcoin hodling which is not ideal for any bitcoin investor.