I've never got rid of any of my paperbooks and don't intend to - I've read them all multiple times, they're like old friends
I have also bought a fair few of them again as ebooks, mainly for convenience (but partly due to the fact we're re-decorating the house and most of my books are in boxes piled up in the spare room
).
I do still buy paperbooks (if they aren't available as ebooks), but ebooks are now my preferred format.