Ethereum is an attempt to solve Bitcoins limited functionality, according to Ethereums co-founder Vitalik Buterin
But ethereum is not a currency whereas bitcoin is. When these are all 2 complete different thing, how one could solve the other's limited functionality ? Even there will be a possibility for that, I could not understand why not bitcoin can do that with another BIP enhancement ? I mean if there will be a solution for bitcoin's issue then within bitcoin itself devs will implement that and no need of ethereum to be a test-rat here.
it helped cryptocurrency adoption to some extent, no ethereum, no ICOs, no developments in cryptocurrency world (ICOs helped whether you believe it or not).
ICO is here before ethereum was announced. All altcoins are doing the work of promotions of cryptos to new people hence there will be no surprises ethereum too joining that big list. The hard pumps etehreum is the only differences from rest of altcoins.