Anyway, I do keep both a paper copy AND an electronic copy of my logbook. And, I'll probably continue to do so for the short-term. For me personally, it's much easier to sit down with a paper copy of my log (while sitting on shore or on the boat) and document my dive buddies' names and certification numbers and jot down notes about the dive that I'll later transfer to my electronic log. I have a terrible memory so, it helps me keep track of things I might otherwise forget when I get around to updating my electronic log. This may not be a big deal if you're diving with the same person or same people all the time. But, if you dive with new people or a lot of different people, it's not feasible to drag your laptop or tablet on a dive boat with you. Plus, I think it's kind of cool to have stamps from different dive shops and charters. I know this is probably just a noobie phase I'm going through and may not continue it for long.
Just thought I'd share a novice's perspective. Hope this helps.