This is exactly my experience (although I haven't had driver issues with multiple monitors for over 10 years). Went from a 1920x1200 24" widescreen and a 1600x1200 20" 4:3 to just a single 2560x1440 27" widescreen.
Next step will be to a 32"+ 4k monitor and I can't imagine needing much more than that for a long time.