Originally Posted by Fieser-Kardinal
I know all of this and my bootloader is already unlocked. but it's just simple: i don't want to.
Well then maybe I'm missing the point you are getting at.
What is it that you "don't want to" do? Not flash CWM? Not use CWM at all (even without flashing it)?
If your issue is that you do not want flash CWM, you can use the "boot" command instead of the "flash" command. You are not writing anything to your device. You are just temporarily loading the CWM kernel into RAM to allow root access so you can place the su binary on your system.
If your issue is that you do not want to even temporarily load CWM into RAM, you could always boot (or flash) a stock insecure boot image and place the su binary in /system that way.
In any case, the above two methods end up in the exact same result as using an exploit to place the su binary in /system. There is no difference whatsoever.