It remains to be seen whether SQL Server on Linux will require less care and feeding than on Windows.
Automating the installation of PostgreSQL on Linux with ansible is a couple lines of tasks in a playbook + a template for postgresql.conf and pg_hba.conf. Automating the installation of SQL Server on Windows (as well as the installation of Windows in general if you aren't using System Center) is a huge pain in the ass.
That's enough less "care and feeding" for me.