I do the same but without writing down anything. I just keep it in my head. I always joke with how creepy I feel when I coincidentally meet someone for the second time after months, at a party or something and start to bring up details about that person into the conversation we are having. For now, everyone has been happy and kinda flattered that a pretty much unknown guy is able to remember precise details about their lives but I feel like a psycho.
People are amazed at how great I am at remembering names and details. It's become almost a super-power, it's weird how writing things down can completely change how people perceive you. It's really cool to scroll through the names and see people I met years ago: the cute barista that moved away right after COVID, an old neighbor's boyfriend, a coworker's dog (I extended the list to also include pets). Brings back good memories and often makes me smile.