If they did not keep track of their records, it is possible that they would simply set aside a limited amount of money for gambling in order to keep their own losses under control. It's depressing to know how much money you've lost over the course of your gambling career, but it could be a sign that you need to stop gambling or put some restrictions on how much you gamble.
And that is one of the massive advantages of record keeping, if you look at the amount of money you have spent gambling over the years and you cringe about it and you think you have lost a lot of money, then that is a clear sign that you should slow down for a bit or even stop gambling for some time, as in my particular case I do know that number, or at least my best estimation of that number, and I do not have any problem with the money I have lost over the years.
Not keeping the track record of one's gambling activities does not make a bad gambler, we have a particular reason for doing or not doing that, what are we to talk about the gambling addicts and other abusers, are they not a to be considered the bad ones here than when you choose not to have the record of what can make you change your decision on gambling after realizing what you're spending there is too much, some don't even have a savings yet they always contributed to gambling each day, what an irony, track record does not make a good gambler.
Whether you keep track of your gambling activities or not, it will not decide if you are a good or bad gambler. Each of us has our reasons for deciding whether to keep track of our gambling activities or not. If you continue to gamble despite significant losses and do not modify your behavior, knowing your total loss records is irrelevant. A good gambler, for me, has extra money for gambling only and strictly stays within the allocated budget. Even if you lose on a weekly or daily basis, it will not have a significant impact on your life, relationships, finances, or family.