Yes, I think so, especially with the cost of HHD space at a premium
(1 terabyte for around $130)
This is the guy that got me hooked,
about 11 years ago when I started
I found the entire US Scott catalogue in images on the web,
and I found it a joy, to be able to identify and
sort my US stamps in a real jiffy, and it also gave me an overview
of the whole US catalogue by scrolling through the pages.
He removed the images about a week later, after a letter from Scott
with a "cease and desist" order.
I thought then, if I wasn't allowed to use his images,
then I would make my own.
Here is an example of his page number 1, not that I would have any of those.
Another benefit of scanning comes when you collect
the more difficult peculiarities on issues, Tony Mac's
indian states is a fine example how we are priveleged to
see stamps we normally wouldn't appreciate in our normal collecting sphere.
Here are some Indian "duplicates" that Jubilee just sent me,
that were real treasures for me, because they are further
examples for my Indian "theft prevention" collection
In a stock book you would never pick the occurences out,
but scanning highlights them marvelously.
"STAMPED" hand written text, and the first ever seen by me a
rubber boxed "STAMPED"