If you are going to collect books as physical objects, rather than their much more convenient digital versions, then it strikes me you should actually find the signs of previous interactions with that object (library stamps, marks from other readers etc) make them more interesting than pristine copies that no one has read.
That runs very much counter to how collectors actually collect books currently. The more pristine the book, the better, aside from particularly rare or valuable inscriptions.
Sure. But while I can understand this approach for rare objects which are the result of great craftsmanship (I would rather not have a crack in my faberge egg) a book is generally a mass produced article with little individual character until someone has left their mark on it.
Even still, most folks would prefer a pristine first edition than one that’s been heavily used.