Yeah most altcoins like ethereum will survive. Nothing can stop these coins. But there are some altcoins with zero daily transaction. These ones will die off very quickly and forgotten.
The value of ETH is largely supported by the ERC20 TOEKN. So I think we can give priority to investment ETH.
Yeah of course Altcoin is the growing cryptocurrency and there is no doubt that one day it will also be in the first row of the top crypto of the world. Now people are taking interest in Altcoin and soon it will get a huge volume of investment.
But I think we should for some time because all the investors cannot invest in all the currencies. Already people have invested in bitcoin, ETH, litecoin and now Altcoin is there in the market, so wait a little more.