A lot of altcoin projects just get funding for their own benefit and leave. Altcoins, while offering the opportunity to make huge profits, are only temporary. If you do not grasp the correct timing of buying and selling, you may lose money.
it is indeed requires analysis and right moment in getting profits from these coins in general, mainly because most of these coins aren't really designed for long term instead you just ride the train and then leaves because at the end of the trend, there's always massive decrease in value because many are investing for good profits but when the project showing no signs of further increase, surely many that have invested will race in dumping their coins and this causes massive decrease.