Ethereum is young in relation to bitcoin, its market capitalization continues to grow every day. Ethereum became very popular when many tokens started using their smart contracts. Many ICOS are based on the Ethereum platform. Will it be more stable in the future? What do You think about this?
In its own way Eth is unique - smart contracts allowed for a rapid grow of ICOs even despite the fact that this technology was initially intended for decentralized apps.
However, as with all other altcoins, Ethereum's price is closely related to the price of bitcoin - you can see that by analyzing the price charts.
Eth will not be stable in the future - it still cannot be treated as an independent coin, and the latest situation on the market when Eth dropped from $700 in late spring to current $130 proved this to be true.