I agree, the  token supply is somehow one key factor why the price is going down, or people look at it as not good investment because of the huge amount of token to be unloaded to the market  once there is FUD created or some large whale dump their ETH coin.  Aside from that ETH is just a good ICO token, and I have seen not much of usage of it.  And what is more discouraging is, ETH authority is centralized while bitcoin is more decentralized since it needs consensus from the different groups of users.