I like physical copies as they can't be remotely deleted, altered, or slapped full of ads.

I do enjoy a very limited number of hardcovers from my most favorite stories from my favorite authors. Great for curling up in bed with.

Paperback is fine, even in the trade paperback sizes now. Though some authors like Brandon Sanderson don't make novels but bookzillas, and I've thought more than once of getting used copies to split for easier carrying.