When I have discussions with friends who have different investment mindsets, I simply ask them if they have money set aside for savings and they do not intend using anytime soon and does not affect their living activities. when they respond in affirmation, I introduce accumulating bitcoin another way to help them save their spare money for a longer period of time instead of just hoarding it in the banks and we are good. I don't convince them to stop their own investments, I only let them see bitcoin as a way of preserving their funds from devaluation, investing spare funds and in turn getting good profits in the long run.
That is fair enough. There are some folks who might already be investing and/or saving, and for them, bitcoin can supplement what they are already doing to potentially complement what they are already doing, yet like you suggested, they need to have some level of discretionary income first, and I would suggest that they need a 4-10 year or longer timeline to invest into bitcoin if they want to come into bitcoin as an investment rather than merely attempting to trade it.
I think the problem is that, a lot people who go into Bitcoin investment often have a misguided mentality about Bitcoin investment, they often believe that Bitcoin investment is often one magical way to get rich overnight or some kind of a liquid asset that they can easily just buy at a low price, wait for a little while and then Boom, there's a sudden increase in the market price and then they sell off, making themselves some good profit. But in reality, it's quite the opposite.
In reality, Bitcoin is actually a very volatile and high risk investment, However also a high reward investment too but to enjoy this promised reward, the investor must be willing to exercise a great deal of patience, discipline and must also be willing to ride out short term market fluctuations by considering the asset's long term trajectory.
The volatility of Bitcoin can indeed be frustrating for those who do not really understand the dynamics of the asset, but for those who understand the underlying value proposition as well as its potential for long-term benefits, they'll surely reap its benefits.
One major misconception people (especially newbies) often have about Bitcoin is viewing it as a suitable asset for short term trading. So this pushes them to attempt to profit from the Bitcoin's daily price movement, but due to the fact that it's impossible to accurately predict the price of Bitcoin in the short-term, this approach mostly ends in financial disaster and disappointment. In contrast, those who consider Bitcoin to be a great way to store wealth and HODL through unfavorable market conditions, often reap the benefits in the long-term.
Another Misconception, I believe people often have about Bitcoin is the possibility that Bitcoin would replace the traditional fiat system, or a way to quickly fix the economy's financial downturns, meanwhile in reality, Bitcoin is more of a complimentary asset that has the ability to diversify portfolios and a great way to provide a shield to investors against inflation, possible downturns in the market and currency devaluation, and the sooner we correct these misconceptions, the more we have a better view of Bitcoin and its potentials.