It's such a personal thing. All these things are. We can share our experiences, but, really, you should do you with no shame or judgement. 😃
I have never got to grips with big monitors and fancy window management. I have one 27" monitor and I have my laptop open next to it.
My window management keys:
- Move windows between monitors
- Maximise (not full-screen-mode, just take up the whole screen)
That's it. But with powerful app switching shortcuts to help.