It saves server space tho
Come on. How much space does one thread take up?
like 2MB
Very close.
The average thread page takes 2.3-2.7 MB of downstream data to load, provided there is only text on the page.
However, most of that is the page template loading, which only exists a single time on the server.
The real figure, in server space per thread, is a couple of kilobytes.