Why does coins prices fluctuate so much and it is never been constant making predicting price much harder and much riskier and holding on to coins can be the best way right now.
why does it change prices constantly and never stagnant?
Demand and supply laced with speculation. Every coin is pumped or dumped by the atmosphere in the market surrounding it.
Good news or a huge announcement or speculating on a huge event like a mainnet launch could pump a coin and a single buyer with huge holdings can cause fear by dumping as well.
With time though, when all the
utilities backing these coins are fully developed, their prices will most likely reflect their value in the practical world.