Asked on 11 Aug 2018
It depends on what aspect you're interested in, so it'll be helpful if you can let us know more!
As a user, cryptocurrency exchanges are necessary if you're looking to get your hands on some tokens / cryptocurrencies. There are different ways to categorise & look at cryptocurrency exchanges. Here are some ways to look at them:
Logically speaking, as a new user looking into cryptocurrencies, you'll use a fiat-to-crypto exchange such as Coinhako to acquire your major cryptocurrencies. If you want to own other cryptocurrencies, then you can use crypto-to-crypto exchanges such as Binance.
Hope this helps!
Not safe to use, few got hacked. Must buy hardware wallet to store your cryptocoins and ensure it is not connect to any network. Store your private ekey somewhere else safe also.
What about cryptocurrency exchanges?
As a business model, it works great. Yes, some of them got hacked and lost millions of users' money. But this business model is a highly lucrative one. The business just needs to remember to enhance security as the business scales. Case-in-point: Binance is a cryptocurrency exchange started July 2017. Today, just after one year of operations, it has about 6 million users and recorded $200 million in profits (Source: https://www.ccn.com/binance-surpassed-germanys-biggest-bank-deutsche-in-profitability/), far surpassing Deutsche Bank, a 200-year-old bank with 100,000 employees, in terms of profitability.
Cryptocurrencies are losing its value now because the market is going through a retrace from the incredible bull run in Dec 2017 - Jan 2018. This is not the first time, price of Bitcoin has retraced several times after hitting highs in 2011 and 2013. Besides, prices of Bitcoin, Ethereum, and other major cryptocurrencies are still higher compared to the prices exactly this time last year. For example, in Aug 2017, Bitcoin is valued at about $4,000. Today it is valued at about $6,500.
Don't count cryptocurrencies out yet - maybe it's not stable enough to count as a safe investment right now, but it's important to be open-minded and focus on the technology and why it exists today. Some reasons why the concept of Bitcoin is novel:
Most of the activities in the crypto space is white noise, yes. But cryptocurrencies in itself is an interesting concept. I encourage you to be open minded. Don't put all your eggs in one basket and maybe cryptocurrencies might be a way to hedge your risks in other financial instruments.
Go for established ones like Binance, Huobi etc.
Quite a few of them got hacked. I don't feel they are as safe as banks now. And crypto is losing their value now.
Blockchain is a good technology but crypto may or may not be useful. I feel the investment is too risky.