Why would you run the BD player through the monitor first?

I’ve got my Oppo hooked up directly to my Onkyo using HDMI. I could use analogue if I wanted but don’t see that advantage. I’m not sure with all the other factors especially speaker and room related that there’d be any big advantage to a stand alone CD player.

3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1