Need had nothing to do with it (and never has).
My wife does refer to is as 'Mission Control' though. Back in 2013, the boss bought a MacPro (a 2010 model) as my new desktop. It had the ability to drive three displays on one video card. At home I had a PowerMac G4 Quicksilver. I didn't want to be outdone by my work Mac so I loaded that Mac with three video cards and drove six displays. It was like that for years from the QS to a Quad G5 to the current MP I got in 2020. At some point I got a DisplayLink adapter for another Mac, but that Mac had trouble using it. So, I added it to the MP for two additional displays.
The TV on top is mainly used as a TV, but when I use it for the Mac it often displays YT videos. The vertical TV on the left I got at the Goodwill for $15 to replace a 23" Cinema Display. It has a failing backlight so I'm only using it for Finder windows. The rest I use for palettes and other temporary windows. With the way I have it set now I can have two InDesign documents open (one on each 30" Cinema Display) and my palettes in the middle (on the 20" Cinema Display).
It's what I want, so it makes me happy and therefore worth it to me.
