Blockchain technology is used to create distributed ledger technology. Bitcoin is decentralized because it it integrated on the Blockchain technology. Bitcoin will forever be decentralized.

That's certainly true, mate. Bitcoin is NOT anonymous by design. While Bitcoin addresses don't explicitly show your name or personal information, they can be linked to your identity if you frequently use a single address on the network. Not only that, but it's possible to view the balances of each address and where did payments originate or where did they go to. As such, privacy coins like Zencash, ZCash, and Bitcoin Private are the best choice to remain anonymous. In terms of decentralization, I must admit that Bitcoin is not fully decentralized compared with some coins in existence to date. This is because, there have been a few players in the mining space which have the most dominance in hashrate within the Bitcoin network. Effectively, ASIC mining equipment and big mining pools, have made Bitcoin centralized one way or the other.

In contrast, coins like Zencash and Ravencoin are decentralized simply because they're ASIC-resistant and have well-distributed nodes across the world (like Zencash). With Zencash's Secure Nodes incentives, it encourages everyday people into running a full node for ZEN to make the network stronger and better than ever. Therefore, in the end, decentralized systems will win, while centralized ones might fail in the long-term. Just my thoughts

Just to add
With Bitcoin, you can even know where the wallet is hosted (when it's a web-based wallet, exchanges, etc...)
It may be possible for a country against crypto to block Bitcoin and even Zcash but Zencash uses domain fronting method that hides the endpoint of a communication. With this then good luck. Privacy-centric cryptocurrencies are still not a lot considered compared to some, but soon it could be a standard to use privacy coin

Bitcoin is already good as it is now... If they wanted it to be centralized then it breaks the whole bitcoin idea. There are other ways that bitcoin can be centralized and that is through exchangers who have KYC requirements.

Centralize currency means an currency which is control by any government or authority where as decentralised currency means those currency which are doesn't control by any person or authority. In centralize currency you cannot control the growth of the currency and you have no freedom in its use. Where as in decentralised currency you can manipulate the growth of the currency. In centralize currency you have to pay tax to your respective government but In decentralised currency you doesn't have to pay tax. Centralize currency are more stable than decentralised currency.

Wanting bitcoin to be centralized is simply wrong. It was made to exclude middle man, and because of that it should stay the way it is. I understand that many people got used to old ways, but we must strive to find a better way of doing things. Maybe having centralized crypto could be good thing, but my opinion is opposite.

centralized will destroy the purpose of cryptocurrencies and centralized system your can found it in the out side world

the most crucial issue for decentralized technology is the implementation of the law. we still haven't fugure it out how to create an high-tech and effective assets/currency to be securable with nation law. most people afraid to invest their money because of this issue. no country(or as far as i know) sheltering a crypto asset. but the technology and efficiency is so favorable. what we can do is to wait until government to take action to support cryptocurrency

Cryptocurrency and blockchain technology is decentralized and that has attracted many people to invest in it. Making it centralized will destroy the system and make other people lose invest in it.

A decentralized system is a very good thing, I think. It is a more modern approach to the development of any of our existing areas. When there are some control centers, it's much better because the monopoly is centuries old.