I sort my .223, 9mm and 45ACP brass.
This is because I use a single-stage, non-compound-leverage press. (I.e. an RCBS Reloader Special dating from 1979).
In the absence of compound-leverage combined with 40+ years experience, I can often "feel" differences between cases of the same headstamp when they are being resized. A feeling that has allowed me to identify cases with potential problems that escaped visual inspection.
My limited experience with compound-leverage presses (which includes all modern progressive presses) is that their users could miss out on the opportunity to discover anomalies in their brass.
So, if you load on a single-stage, I would say that sorting your brass would not be a waste of time.
In any case, I would recommend every reloader/handloader spend time inspecting their "previously-fired" brass for potential defects.