> Storing your coins on coinbase (or any other exchange) is pretty much always a bad idea. If you don't own the private keys, you don't own the coins.
The problem here for most of the people currently FOMOing in, is that there are no "good ideas" as far as coin storage goes. Storing on shady exchanges is risky, but due to lack of knowledge / technical skill, many/most would also be at risk of losing their coins one way or another if they held the keys themselves.
What this tells us, is that this technology isn't ready for mainstream use.