Ethereum can be programmed to do anything including anonymity so no more need for specialized coins.

Ethereum will eventually provide all needs. Other coins pale in comparison.

Ethereum is already a mature produce with $millions spent on development. Z.cash is immature and not yet ready for prime time. Ethereum's price and market cap are going up and now #2 market cap.

Ethereum will steamroll everything including Bitcoin.

Sell your XMR and DRK for ETH.