Everything goes by meaninglessly and feels empty when you live like we do. I have vivid memories of my childhood, but there is hardly anything to remember about the last few years. When you are enjoying a fulfilling life, time would go fast and feel memorable afterwards, since good things happened. When you are living through a period of suffering, time will pass extremely slow, and when you look back it will feel short in a way, as nothing good happened. When you are not suffering brutally, but are merely existing meaninglessly and coping as many of us are, days go by fast, and it feels short when you look back on it because nothing happened. They call this the short-long paradox. Good times feel short when you are in them, and long when you look back because of good memories. Bad times feel long during, but short after, as your brain doesn't want to remember it. Nothing times like coping and playing video games feel short when doing them as it's a quick dopamine hit, but also feels short afterwards because nothing memorable happened