Right on the spot for me. Having my tasks divided between monitors (and always knowing which monitor to look at for program x) is great. I feel like it helps my workflow a lot :-)
Same boat for me. I also have 1 of my monitors in portrait mode that I don't think I could give up by switching to a single ultra wide
Same here.
I tend to tile my windows and use the different displays for the different 'flavours' of my work.