I’m an architect. It’s nice having the project I’m actively working on always active on one screen, with design sketches, marked up revisions, email with comments from client, renderer etc. active on the other. Sure it only saves a second not having to tab back and forth, but if you’re doing it non stop all day it makes a big difference. Also just less effort.
I usually have a few bags on the go as well, variety is nice. Once there’s not enough left for a cup I’ll wait until another bag is in a similar state and combine. Sure it’s not as fresh and sometimes it’ll be a weird blend, but usually super good enough.