Yes, I believe Steemit will still be here in the next five years. There are two reasons for this.

First, unlike other cryptocurrencies that have no real products outside of the cryptocurrency, Steemit is already a functioning product based on the Steem Blockchain. It has a significant amount of active users and there are a number of apps and platforms being continuously built alongside it, like Musing.io. These apps and platforms can only help the blockchain attract new users and investors. So, Steemit will not only be strong enough to survive in the next five years, but also thrive.

Second, the upcoming launch of Smart Media Tokens (SMTs) will create massive opportunities for growth in the upcoming years. Once SMTs are finally launched on the blockchain, it will provide the opening that Steem and Steemit needs to facilitate mass adoption through tokenization. What the ERC-20 tokens did for Ethereum, the SMTs could potentially do for Steem. 

It is because of these reasons that I believe Steemit and the Steem Blockchain will still be here and thriving in the next five years.