Well, it's a good time to buy when the price is low.
ETH has not showed its power yet, but you can be sure that sometime down the road, the average joe will learn about it.

DAPPs are already a great pilar, but wait for these two ones and people will understand just how powerful is ETH:

EtherBrowser: the upcoming primary client for Ethereum, which will exist in the form of a web browser that can be used to access both normal websites and applications built on top of the Ethereum platform

Swarm: an upcoming P2P data storage protocol optimized for static web hosting that will be integrated into the EtherBrowser