FWIW I chose discourse as my last forum software because it's written in technologies I prefer, ruby/postgres.
Even though I prefer the UI elements of xenforo or Invision PowerBoard- I can't ever go back to using mysql after administering oracle, mssql and postgres.
MySQL is the mongodb of relational database design.
And PHP is the equivalent in scripting languages, unfortunately.
Edit;
I wasn't clear apparently, I was saying while I like the configuration system, I do not like the UI, or the UI trend and I additionally do not like to tie in with mysql, we should be deprecating mysql from personal things so that in 10 years business can follow.