What makes digital more future proof than non-digital? We will still be able to read from paper in 500 years time. Whether your digital file will still be around by then, whether there will be software around that can read it, that's the big question here.
Digital has a few benefits in being able to quickly summarise hours on various types and sub-types, but beyond that it's fully up to you as to what you prefer. And with so many hours, will you ever need to show your logbook apart from having to prove currency? Mind you, after hanging up your headset, a paper logbook can be shown to (grand)kids with pride and the associated stories can be told, you can flip through it on rainy days and reminisce. I'm not sure a digital logbook has that same feature.
