Bitcoin is presently used for illegal activity, remittances, currency in countries undergoing hyperinflation (Zimbabwe, Venezuela), as a way to make oneself feel wealthy, and of course price speculation.

Ethereum is currently used for startup fundraising via ICO, for tokens in collectible games (Cryptokitties), to distribute ad revenue from browsing the web (Brave), to incentivize participation on curated social news sites (Steemit), for decentralized prediction markets (Augur), to get paid for donating computing power (Golem), and of course for speculation. Possibly others I'm not aware of too.

Proof by example or analogy is not a proof.