I just think that altcoins don't have many weaknesses, in the last few months there has just been an inflammation around the Bitcoin mainly, it was crazy and the price exploded in just a few days. With everyone looking to exchange crypto currencies, the system became unusable with much too long transactions and the explosion of fees for a transaction. The value was overvalued. I think this explosion was too rapid and the system didn't have time to regulate itself to answer the high demand. It simply gives the crypto coins time to develop. But the development of crypto currency has an important ecological impact with the enormous electrical consumption of mining. So we'll have to find solutions.