Excellent response, thank you. Ive finally understood the difference between "Desktop Environment" and "Windows Manager".

Calling this stuff "side-show" very much resonates with me. I set this stuff up once when I install i3wm on a new system, and it works well. The problem is when I want to do something that Id never foreseen, there I go into googling for the bash command I need, and that I find annoying.