Bitcoin and other cryptocurrencies indeed became more popular however, there is a mixed of impression towards this industry; some are positive about sits development and some are not. Basically, we cannot do anything about it 'coz you would only appreciate this blockchain if you're one of the users or if you benefit from it through profit and it just happened that they don't which is why they are more likely against its adoption. If we would look back from the past, this industry has gone far already and that is by means of just allowing things to be known by itself. Allow them to seek for that curiosity which pushed us towards this industry on our early years. Spoon-feeding them will just result to misconception if they won't have the least initiative to read things about this industry for them to know more about it.
The future of crypto currencies is unknown, but it is a new generation of Money which is already replacing the paper currency, especially Bitcoin been the most popular and successful among other crypto currencies so far
From my knowledge there is no day bitcoin is replacing paper money and it's not created to replace paper (fiat) neither was it created to compete with fiat. Bitcoin is created to be a
supporter to fiat where fiat payment can't scale through bitcoin will solve the problem, for instance you can be at your home to transacts some billions of dollars through Bitcoin without have to go queue in bank where they would start asking some silly questions about huge amount you are sending out to people, also in bank there are always some certain amount you can send per day or months but with bitcoin you won't experience those barriers.
Not even close; there is a higher chance that fiat and digital currencies will co-exist in the future as alternative modes of payment. Bitcoin and cryptocurrency in general won't be an option to be the main currency across countries given that it is decentralized and that of restrictions from other countries, despite of its advantages over the other; it has its own flaws such as high transaction fees to name one.