I wouldn't think if all the altcoins died. In the current year 2019 all the coins slowly begin to grow. But there are also dead coins. Until now the Altcoin season has not come back to arrive and certainly, this made many people feel scared. Fear arises because those who hold many altcoins and Altcoin prices continue to decline.
If many people say we should "Patience " Yes, of course, we all have patience. Maybe I'll wait until the end of the year 2019, maybe if there is no change, the coin that has a low volume will I sell.
You're right . The market in 2019 really has a lot of big fluctuations and a lot of good coins were launched during this period. I think that if you carefully evaluate it, you can consider long-term investment in those coins because it will surely bring you huge profits in the near future. The crypto market now depends heavily on the psychology of investors and if people trend to buy more then that coin will surely be a profitable investment for you. Of course, not all altcoins are good because in 2019 alone, hundreds of coins died and there was no trading volume.