It's a long story, really ! We need to fight to keep Steemit INC engaged with their own dApp, steemit.com, they are considering "sunsetting it" to focus on the back-end (blockchain) and let the community take care of the interfaces. Check busy.org, steempeak.com, steeve.app, and the mobile apps like partiko and esteem ...
Steem the blockchain is a lot more than the "social media" applications though. If you delve a little bit into its internals, you'll see that there are serious reasons to invest in steem, almost regardless of the "social media" apps