It's not all about creating content -- there's value and of course SteemPower & money to be made simply by commenting. Check out beta.chainbb.com (ChainBB) which are forums based on Steemit. That way every new post isn't really a full out blog. I'm more of a private person myself as well, not really into posting on social media. The good news is Steemit has something for all of us :)