I was first certified before the use of dive computers was common. Apart from my checkout dives, I logged only a few of my dives in a logbook that I had. I just didn't find the information very useful, so I stopped for a while.
When I finally got around to getting a dive computer with a means to connect to a computer, I started to log my dives pretty regularly. The information contained is a lot more useful, especially with AI computers, as the software can easily calculate SAC and RMV (if you enter tank info). With that, and gear info, it can be helpful down the road.
In the past, I've used Diverlog. It's got some useful features, and works with several dive computers, though there is a considerably larger list for the Mac version compared to the Windows or Mobile platforms. It does give you the option of printing the log so you can have a paper copy, though I've never actually done that.
While I was using Diverlog, I also tried out MacDive. I didn't see anything to move me to the full purchased version over the free version of Diverlog, so I stopped.
I also started trying out Subsurface. Pretty sure, this works with an even larger group of computers. I was using both at the same time. There are a few features I like in Diverlog better than Subsurface, but the more I use Subsurface, the more I like it. I also downloaded the subsurface iOS app, which is really nice. It works through the cloud, and all the dives I've logged on Subsurface for Mac are now available on my phone. On the phone I can pull up the profile, gas, gear info, and a few other things. There are still some things that need the Mac version, but it's got the basic info, and should be sufficient for someone wanting to take a look at a log.