..investing in Bitcoin is better than other investment areas in many ways.
When we are comparing timelines (5-10-?, years investment) that truly makes a difference, I can fully agree to what you said. Bitcoin dont just surpass other investment on performance, it also questions the way we place value and risk. But still, I wont say it is better for everyone in every level. Many people still fall under the category of inconsistent paycheck, short term stability, some are still looking for a job. Meaning, not everyone is mentally and financially positioned to withstand the ups and downs that surrounds it within 4 year cycles or longer or perhaps till the their maturity date.
Do you think that a person should never invest aggressively in Bitcoin?
Of course a person can buy Bitcoin aggressively. When he is meeting his basic needs very well every month and has a healthy amount of money in his emergency fund, my question to you is why wouldn't a person invest aggressively in Bitcoin?
You said that the evidence is that investing in Bitcoin will cause him to suffer in emergencies. So what is the purpose of an emergency fund?
Again, you said not to invest the entire portion of his discretionary income in Bitcoin. And it seems that a person can sometimes invest the entire portion of his discretionary income in Bitcoin because then he has an emergency fund to meet his needs in emergencies.
Yes, until a person builds a healthy emergency fund, his focus should be on the emergency fund.
I dont disagree that buying aggressively can be reasonable if we buy under the right conditions, especially if the investor has taken care of the basics of investing (stable income, emergency funds, low or no debt limitation). However, every investors should know if they are emotional ready for the action they want to take. Because in Bitcoin, its not just about doing things inpulsively, its about durability under pressure.
The truth is, in real life emergencies dont always follow the boundaries we set between having an emergency funds and long term investment. Some emergencies threatens life, loss of job, divorce etc. During these times, we may think we can handle everything until it becomes serious leaving the plans we made during easier times to the test.
One more thing you should know. Bitcoin in the long run has a pretty way of revealing if our emergency fund is solid or it is theoretical.