What do you think about the other crypto currencies that exist?
99% of other (non-bitcoin) cryptocurrencies are obvious scams or jokes.
99% of those other (non-bitcoin) cryptocurrencies that are not obvious scams or jokes will probably turn out to be scams or failures in the long run.
As such, only 1 out of every 10,000 non-bitcoin cryptocurrencies have any hope of long term success. If you think your favorite one is that 1 out of 10,000, then there is a 99.99% chance that you are wrong.
I believe the other cryptos in the eco-system all serve a purpose, thats not to say that they will have value, but they serve a purpose.
In most cases, that purpose is to separate fools from their money.