The beauty of a hand written logbook is you have a continuous almanac of your flying career from First flight, First Solo right through to final check ride and final flight with all the people you flew with and all the margin notes you made along the way, all in a very accessible and readable format. The hand written log books are also a very accurate record of what you flew, who with, where and when. Not sure just how personalised electronic log books can be these days, some employers require a lot more information about one's hours than others, saw an experienced B747 skipper get turned away from the interview once because all he had to offer was a weighty computer print out!