The daily transaction volume of bitcoin is always above $ 10 billion, this is what can make the value of bitcoin rise and fall significantly, but this is a good opportunity for investment because of the bright prospects 
I think Bitcoin is still want of many investors, that's why its price is continuously rising because the demand is growing. Also its good to invest to it because of good project and really most reliable coin too. Even there are so many coins existed right now Bitcoin is still dominance and it is most profitable to all. Even its price is sudden change it is still worth it, and can give you opportunity to get huge profit.Well, firstly, there's a mistake in the post you quoted. I don't know where that number came from but according to blockchain.com Bitcoin's estimated USD Transaction Value has been almost always below 2 billion USD, and it has never exceeded 6 billion USD. Secondly, what do you mean by "its price is continuously rising"? Check the charts from the past and you'll see that it's not true. I would agree with you if you were telling from the far far future though. I think somewhere in 2030s it will be possible to say those words, but not today.