I like your attitude. However, there is still a need to constrain on how much you are spending. If you dont have a limit, you may be playing more than you can afford and that is where all the problems will start to appear.
Yes we have to look our profit and loss in gambling. Otherwise, we will lose more money that we will not afford. But many gamblers do not maintain this record. It is not necessary, but you should keep one eye on your bankroll. Even I also don't know how much I lost in gambling. But I will play only how much I can afford that money. If it exists, i will stop my play and will do when I get extra money.