Bitcoin is really a good investment. But aside from bitcoin, what cryptocurrencies one must have at this season? The goal is for keeping it/them for a long period of time and the profit when the time is right.

I see that there are many who consider quantum computers as a threat to Bitcoin!!
I think that Bitcoin technology will also be updated in line with quantum, so there will be no problem.

  But one thing has come to mind, if someone wants to damage the Bitcoin system or system information with the help of quantum computers before Bitcoin technology is updated in line with quantum, will it be possible?

I would like to know the opinions of blockchain and Bitcoin technologists and those who work on quantum issues and new technologies!!!

In the current context, the political policy of any poor country is 99.9% wrong, and the politicians of that country do politics not for the development of the people and the country, but only for their own interests.

And in all those countries, blockchain technology is not only necessary but essential for the functioning of the financial structure (prevention of inflation) and correct voting, But the sad thing is, when the corrupt politicians of these countries understand the power of blockchain technology, they want to suppress and ban it on some pretext or the other.

Not only that, they also get busy giving their pretext a logical form!

That is why revolutions and coups are often seen in countries of conscious people!!

https://paulkrugman.substack.com/p/the-dollars-special-status-sources

This is a great article about how to properly look at the role of currencies, including the USD and (by implication) Bitcoin.

Krugman says the same thing that I've said here many times: that the USD is never going to go away as a unit of measurement. And all Bitcoin amounts to is another means to move around USD-denominated value. Nobody says, "please give me 0.029827 of Bitcoin", rather they ask for some amount of USD in Bitcoin.

Indeed, the idea that "Bitcoin will replace the USD" is... idiotic. That idea simply makes no sense--it's like saying TCP/IP is going to replace the USD.

Definitely worth reading if you are interested in the long-term role of Bitcoin in the world, and how it fit in to human value transfer.

I've read about this new proposal from the Bitcoin Core development team, which aims to freeze Bitcoin stored on legacy addresses if they're not "upgraded" to a Quantum-Resistant address on-time. More info about that here: https://bitcoinmagazine.com/news/bitcoin-developers-propose-quantum-plan

Does that mean long-term collectors of loaded physical Bitcoin collectibles (particularly, slabbed/graded coins) are at risk? Because such a move would force collectors to break the slabs just to redeem the Bitcoin inside the loaded collectible (like a Casascius for instance). Talk about inconvenience.

What do you think about this? Will it gain the approval of the community? Your input would be greatly appreciated. Thank you.

Currently Bitcoin is too valuable. Bitcoin can be compared to gold because of it value.most times people normally call it gold digital,
 but we need to actually know the relationship between this too phrase and why it's compared.
Now the reasons why Bitcoin is compared to gold is as follows
Gold is very difficult to find because of it value, the product gold, can't never controlled by any government or country, because of it's independence, both Bitcoin and gold appeals to people who distrust way out of financial method.
From creation, Gold is wealth, which is very valuable and have trust on, that is what makes it acceptable.
From 2009 when Bitcoin was launched, it's still as new as it was launched today, because of it value to the society. Although the Price is  volatile, but is preferable. that's why it' only exists disitally, this made people to trust and partner without fear, transactions can be made in an twinkle of an eye, to any place around the world. Gold as well is generally accepted globally.
Gold has weight, and it's high to export, now Bitcoin is trying to stand what's gold can afford, this both phrase has a high value of standard, one thing you need to also know is that gold is gotten from mining, and Bitcoin is created in a digital system.