In all fairness i think most folk are only dual booting because
they've only been using linux for a couple of years and still have
hardware or one or two bits of software that is still windows.
I'm currently dual booting so that i can run a vehicle engine tuning
app and a mind mapping program i like. The scanner only takes windows
drivers and only gets used a little so isn't on my list of priorities
for replacing yet. I was using OSS on windows and so the majority of
my everyday needs were catered for the instant i swapped to linux.
Couple more years and like you i'll only be linux.