You don't need to build your sites out of empty pages with templates. Templates are pre - created sites, with components (like sections and tiles built into pages), page structures, and designs!
As you may have noticed yet, sites and templates can be built on top of each other to easily re-purpose a site, or generate a new site.
To create a template from a site:
Select the site from the Sites and Templates dashboard.
Click on More from the Site Details menu.
Click Clone As Template button.
Fill out the details for your template such as name, description and folder location.
Click the Duplicate Site as New Template button.