Ready for my opinion?
>> I believe you SHOULD update to WordPress 5.0, but install the “Classic Editor” plugin for now. <<
The Classic Editor plugin gives you the ability to TOGGLE between which editor you prefer to use, on a per-post basis!
This means that you can create new content using blocks, OR just continue to use the classic editor if you’d like.
So why not JUST use Gutenberg and blocks?
Personal preference 🙂
I, Pete McPherson, am going to use the blocks editor! However, I fully appreciate people’s hesitancy–and think that the Classic Editor plugin is the right way to go for most bloggers.
Trust the WordPress developer team! Over the long-run, the Gutenberg editor will surely get even better.