Well, it is an interesting discussion about the use of Bitcoin and other cryptos for payment transactions. We all have known that currently, the online payment have been rising, moreover because of the pandemic. It is done in order to decrease the ways of spreading the virus. by online payment, we can limit our movement and activities for touching something. In this case, the OP concerns is about the Bitcoin. Well, such interesting and personally I also feel the same, will be great enough to use Bitcoin and other cryptos for some kinds of payment method and transactions. However, before going to have it, there are some notes as the followings
have met allot of people and some of them are already old (60 above), and for them, there's no room for improvements in terms of transactions as even bank transfer is hard for them to execute that they need someone to support them while doing so.
If you are talking about 60 YO people and more, I think it is better to let their children or families to do the online payment. Well, in some countries, online payment may have been usual and common enough. For 60/moreYO people, they are probably usual to use online banking and other online payment methods for transactions. But, for some other countries, they cannot, they are really not usual using this, they will prefer to use the fiats for payment. Moreover about Bitcoin, I don't think that it will be effective for them.
However, if it is about for the people under 50YO, I am sure that it is still effective and may work well for them to learn about online payment, especially about Bitcoin or other cryptos. (note: it doesn't mean that I underestimate 60/more YO, but I see the reality, it may be the most.)
A dream of inviting our old citizens to bitcoin will not be possible if we ourselves lacks the fundamental knowledge about it, the best way to properly explain things is to first learn and use it.
Second, if we are going to introduce the people about using Bitcoin, we should ensure that it is available to use that digital currency for payment methods in your country. How can we teach someone with something not exist in the area around us? For example, I live in a country where the Bitcoin and other cryptocurrencies are only legalized as digital assets, but not for the payment. It must be noted. It means that this expectation cannot be implemented in all countries, especially like what happens in my countries, it will never be effective to introduce the BTC for payment because it will not be used there. However, if it is for the countries that already use BTC for payment, I think we only need to spread the positive news and issues to them, teaching them by acting, they will see what you do and what you get. And when they think it is effective and easy enough, they will be interested in learning about it.
If it is about introducing them to use BTC as another way of investment or earning money, it may happen in almost all countries that support or legalize crypto. In this case, you may not tell them only about the profits, high expectations to be rich, and others. It is better to tell them the exact facts, about the profits and also risks.