I use i3wm's `bindsym` for stuff that's related to window management, like moving around windows, resizing them, moving windows or focus to workspaces, etc. Other stuff, like volume control, screenshots (print screen -> take screenshot, upload to a web server, put URL in clipboard), mouse movement (with xdotool), etc. is handled through sxhkd. There's no reason I couldn't just use bindsym for all of that, but now non-windowing hotkeys is not coupled with the WM, so I could choose to switch window manager and still have all non-WM hotkeys work.