For me, it’s less strain on my eyes, it always works even without electricity, I can lend it out to friends easily, and I like to expand the aesthetic of my bookshelf. I’m also more likely to reread all or part of a physical book. Ebooks are simply inferior.
I still buy books once in a while, but those are either non-fiction or I want them for the pictures (e.g. a book by Brom whom I knew through his art on MtG cards)
Certain reference manuals (The O'Reilly Zoo, for example) are more useful as physical books, as well.
Besides, if I got hit by a bus tomorrow (not planning on it today), it's not there's anyone to inherit my stuff.
As a reader of many many Kindle unlimited military sci-fi books I sympathize and recommend the "Nameless War" ( https://www.goodreads.com/book/show/12356877-the-nameless-wa... ) trilogy as the rose in the manure of books I have read of this genre in the last few years.
There are occasional spelling mistakes etc but the story itself is fantastic and the military scenario believable.
All that said, I've also returned to paper for essentially anything I anticipate wanting to take more than a few notes in, or really referring back to at all.
Also after having moved my books between four apartments and our current house, the next time we move I’m prepared to just toss the lot of them.
You can use one to take your entire library on vacation instead of just a few books.
Some of them have lights built in for reading in dark environments.
They're much easier to use one-handed than most paper books.
Some of them are waterproof and will survive being dropped in the bathtub better than a paper book.
You can change the font and text size to suit your preferences.
You can instantly download a new book when you want to read it instead of waiting for it to arrive in the mail or going to a bookstore or library.
They are not "simply inferior" as you put it, even if you happen to prefer paper books.
Sure, there's an aesthetic to certain books but that doesn't apply to the random paperback or even popular hardcover novel. And I appreciate the decrease in clutter. I recently donated a bunch of older "classic" paperbacks that are works I can download for free or near-free anytime I want.