[selcuka]

> Why on earth you will send markup template for every list item over and over again instead of sending just data and only one code-template (to render data on a client) ?

You have a point, but not everything needs to be black and white. We had this nifty technology called AJAX even before SPAs were a thing. Now I understand that SPAs are built on AJAX calls too, but it is also possible to render (most of the) HTML on the server side and only use AJAX using off-the-shelf components such as Datatables when you absolutely need that functionality.