I log most all of mine but I have many many dives that were short dives like a 5 minute dive that did not make it in the log. One thing I think is very important about logs though is in an emergency it can kind of give details to investigators about your experience. One case was a diver who passed away on the vandenberg.
Even though I have not kept up with the details nor want to start any kind of debate one thing that comes to mind was that the investigation included exactly how much experience he had with his particular equipment, who trained him in his training dives and the conditions of the training dive vs the one he passed on.
A log is good for so many reasons it just makes good sense to keep it. As above posters posted if you dive with a drysuit and miss diving for a whole year then go back you can eliminate alot of guess work trying to find out what weight to use.
and last but not least if you do have a goal to reach such as dive master msdt and other certs then yes it will serve as proof of the dives!
Even though I have not kept up with the details nor want to start any kind of debate one thing that comes to mind was that the investigation included exactly how much experience he had with his particular equipment, who trained him in his training dives and the conditions of the training dive vs the one he passed on.
A log is good for so many reasons it just makes good sense to keep it. As above posters posted if you dive with a drysuit and miss diving for a whole year then go back you can eliminate alot of guess work trying to find out what weight to use.
and last but not least if you do have a goal to reach such as dive master msdt and other certs then yes it will serve as proof of the dives!