I think the final wave were seeing now is ico funds cashing out. Many ico funds had been kept in Ethereum, speculating that the market would rebound quicker than it has. Ultimately ico funds are meant to fund the project, pay salaries, pay for infrastructure, etc. Were seeing BTC and especially ethereum tank right now. Ethereum is hitting a historical resistance point at the moment.
But as stated by many others, this is a good time to DCA in. Earn some Fiat now if you can to buy more of the good money. And never invest more than you can lose, in anything.