Digital has lots of advantages. You can have it with you at all times on your phone. You can use text to speech. You can export your highlights. Soon, people are going to want to ask ChatGPT about content from books they read, as well as highlights and comments they added.

A physical copy is the worst format that I would personally consider buying. I only do that when I cannot get a digital version. And the first thing I do once I get it is that I cut off the spine and run it through my scanner.

(Then, I spend hours researching the internet for a good e-ink reader :-D)