in my opinion you are too pessimistic, judging by the Bitcoin graphics, there are both rise and fall ... there are no such coins that do not fall in price ... if you do not believe in cryptocurrency, you can leave and not look back, but then you regret your decision? time will tell.
Crypto owners must have positive thinking, do not be skeptical or discouraged to see prices continue to fall, as in 2018. because it compares with crypto prices, especially bitcoin in 2017. Even though it cannot, the crypto market prices always go up and down according to market conditions.
Try to note that today the price of bitcoin has reached USD 8010, and almost all altcoins have also experienced price increases. The green market really colors the crypto trade. So in my opinion the crypto price has taken off towards the highest point in trading.