I think Eth is a good investment. There are always more ICO's and altcoins building through Eth so it's good to have some in case you see another coin you want to get in.
That's right and more development coming in will take the price of ETH even to higher level in future and I don't see any reason behind staying away from it and if you stay away from it then you will surely regret in future.
Ethereum is good investment and surely you will love to earn on this altcoin. It has been stronger or strengthened its existence until today. So ethereum is good investment even for a long term because surely you will earn on this altcoin.