There's no accounting for taste.
In my case, it's probably due partly to the law of primacy (which I understand is discussed in the FAA's "Fundamentals of Instruction"), and partly to the fact that I find EFBs difficult to read on a bright sunny day.
I also like having a means of navigation that doesn't depend on always having access to a source of electric power.
I have an iPhone and an iPad with a current Foreflight subscription, but for inflight use, I still use paper, so I guess my preference is "both."
I've had flying days longer than the battery life of my tablet, which is getting shorter by the month.
I've had a total electrical failure moments after breaking out of the clouds on approach.
It's hard to scan the next 100 miles ahead on a tablet, even using my desktop 23" touchscreen at home. It's pretty easy to fold open the chart, and everything is legible at a glance without zooming out, scrolling repeatedly and zooming in and out . . . If you're happy with the GPS presentation in your car that shows only the next two blocks, don't worry be happy; I gave up on that sorry POS years ago after zooming out about 15 times to see 1/2 mile ahead, then it reset itself to 2 blocks after about 15 seconds.
Sometimes it's nice to see where I'm going, not just where I am; I an airplane, sometimes it is
necessary to see where I am going.
Plan a short flight, just a couple of hundred miles. Write down the name, identifier and ATIS/ AWOS frequency of every airport that you will pass enroute, because it's good to know the weather ahead in marginal VFR and IFR. Sure, you can get XM, but does that tell you wind, ceiling and visibility of each field when you're still 20 miles out? Do you care what they are in case you need to divert? How many dozen times are you zooming in and out to read the writing get that disappears whenever you zoom out to look ahead? How well are you pinching and scrolling while bouncing through the clouds and keeping up your instrument to scan?
These are just some of the reasons I like having paper charts in the plane. The EFB is a handy tool during preflight planning, though, and Avare works pretty well for that. When it doesn't suddenly scroll me several thousand miles into the Atlantic Ocean instead of halfway across Alabama.
Notice, though, that I'm not making fun of you or denigrating your choice. There's a difference . . . And your style drives people away when they encounter it too much. It's why I'm no longer on the Red Board, and I'm getting sick of it here, too. Too freaking much attitude from too many people . . . .
When I want to see the big picture with out details, just a few button pushes will scroll my Garmin 430W from my normal 50nm scale out to 1000nm, but all airports and much Special Use Airspace disappear along the way. Sometimes I need to see that stuff to plan a way around it.