That's me, doc!
Ostensibly the second monitor is for a preview of my work output, so I can be working on one monitor while seeing the results immediately on the second.

In actual use the second monitor is displaying Youtube, Netflix or other local media
For the original question: I have multiples of both. As they say: horses for courses.
Fixed:
1 work desktop
1 gaming desktop
1 server for work (VMs, private DNS, etc)
1 server for home media (*******s, Jellyfin, Samba, etc)
Portable:
1 thin and light laptop for work and meetings
1 gaming laptop for gaming and occasional heavier work while on the go
1 android tablet
1 ipad