I suppose despite of all this hype around Bitcoin there are many alts that can compete with it in future. Ethereum has already proved that it is №1 to be next to Bitcoin.
I agree with you about Ethereum.
Among other altcoin, Ethereum seems to be the best choice to pair with bitcoin (meaning second position after bitcoin).
Currently, in addition to having a wide market for trading, Ethereum has smart-contract that are vital to their development, especially to attracted investor interest.
There is no one, a currency down due to some reason as like the no interest of the new people, the low investment rate in that currency and the low raise in the value of that currency. while bitcoin have not these all either one. So if any other currency raise the bitcoin will raise more than that. so the chance of the next to bitcoin is not there. I believe that there will be bitcoin ON THE NO.1 ALL THE TIME.