I agree, but speculating about the future is fun
Surely it is fun if one doesn't have anything better to do with their time. Additionally, it is also "fun" for signature spammers as they can make easy "on-topic" posts.
For me, cryptocurrencies should have a bright future. They really solve problems of the real world, making people more independent from the banking system. At present Bitcoin has already advantages to traditional financial services in some areas, for example remittances. I don't see these advantages disappearing.
I concur. There are huge advantages that Bitcoin offers in many areas. When it comes to banks, transactions are slow, the fees are high and problems are not uncommon. On the other hand, Bitcoin is cheap, transactions are fast (near instant TX, and 10 minute average confirmation time) and (network) problems are very rare (over 99% up-time according to a website).
The great question, in my opinion is: is Bitcoin really the best cryptocurrency design? And if not, can it be improved so its flaws are not important anymore?
There can't be a single cryptocurrency that has the "best design". It comes down to both the purpose and design. Yes, Bitcoin can be improved and is constantly being improved (e.g. Segwit).
My largest concern is the energy consumption of the PoW mechanism. For the scalability problems, there should be fixes, and the technology advance here should play in favour of Bitcoin. But in the case of mining I'm not sure if there is a fix for it. That's why I closely follow the developments in parts of the altcoin area (PoS, PoB and similar systems).
Bitcoin could potentially switch to PoS, but PoS is not the answer. PoS is not as good as PoW.
In the end, it may be possible that in 2030 we will not need money anymore. But I think it's a bit early for utopias. There are 14 years until 2030, that's nothing.
I highly doubt that as well.
