Bitcoin can protect us by using bitcoin wallet and we can also deposit are money if you cannot trust the bank or atm's account you have a second choice to choose the bitcoin wallet it can help to not to robbing if you walk in the street or walking in street in the night and it's easy and safe to use it's look like a bank account you have a pin to log in in your bitcoin account.

Neither Bitcoin nor altcoins are safe, at least when compared to the other forms of investment. They are extremely risky assets to make investment, and you should be ready for a scenario where your entire capital can vanish. And regarding profitability, I'd go with BTC. Because a lot of altcoins are being created by fraudsters these days.

Bitcoin won't last forever there's no such thing as forever. Every crypto will have it's end but we don't know when. One assurance is Bitcoin's security. Our technology is not powerful enough to brute force in to someone's key and steal their coins. Attacking the Bitcoin network would be costly for anyone just to have the power of double spending in a day or two.

Most people invested in bitcoin but didn't conduct any research they think bitcoin as an easy way to make profit but the true purpose of bitcoin is to become a decentralized payment that would rival and challenge the current fiat system and possibly surpass it overtime with if's innovative technology. It will become the new form of payment.

Governments can ban cryptocurrencies, because they're being pushed by financial institutions who are afraid bitcoin might take over. But the authorities realize the value of crypto and blockchain, so they may be not that keen on eliminating this new technology. They will regulate and tax cryptocurrencies, but they will not deliberately destroy bitcoin.

Over the last few years, there were so many ETH-killers that even hard to count. And what can we see now? ETH is still here, and no one knows where these ETH-killers are gone. And taking into account the current market condition, only strong coins will survive.
I must pay tribute to Cardano project. It is a promising one and there is no dispute that it has excellent technology. Nevertheless, I don't think Cardano will replace ETH, at least in the nearest future.

Blockchain technology will be an innovation and development in any fields in the next 8-10 years. There are numerous examples on Blockchain’s use in different business domains including healthcare, banking, financial institutions, legal, manufacturing and so on, which speaks volumes on the future of Blockchain technology. Blockchain owes its name to the way it stores transaction data – in blocks which are linked together through chain. All the blocks in Blockchain have their unique hash for identification, are of limited size, and linked together by pointing to their previous block. I think most people later will consider Blockchain as a technology that offers transparency and temper-proof data.

Because bitcoin prices are so important from altcoin price movements, when bitcoin prices rise then altcoin prices will also rise when bitcoin prices go down then altcoin will also fall, altcoin will not dare to try to raise altcoin prices when bitcoin drops in price.