I have been using Finprotrading for crypto trading, they are good.     

According to the goals that are mentioned on the whitepaper of Bitcoin by Satoshi Nakamoto, they are:
1. To avoid the involvement of a third party while transacting the money.
2. Bitcoin comes with the condition of publishing real time transactions while keeping your identity safe and still verify the trade.
3. To avoid heavy taxes or fees charged for transactions that are done within the people of different countries.

@Levero I totally agree with your point. And moreover bitcoin has gained popularity in no time as compared to any other assets. If the value ever goes down it is more likely to go up in sometime. Traders find it an opportunity for buying more bitcoins when the value goes down.