I think it's simply preferential.
I've loved floppies all my life cause
1) I'm too impatient to wait for everything to be resolved to get an arc.
2) I love admiring everything from the cover to the interior art on a face to face basis.
3) I love the freedom of forwarding or backtracking at any point at the flick of a hand.
I do plan on dropping floppies eventually because I have way too many as is. That will be in 2 years after all this Rebirth business wraps up and shifts to the next phase. I will start buying trades after that. I can't get into digital personally. It just seems so impersonal.