I think its because tasks take longer as an adult. For example to accomplish something as a child takes a few hours, homework for example. But to accomplish s

I think its because tasks take longer as an adult. For example to accomplish something as a child takes a few hours, homework for example. But to accomplish something significant as an adult could take months or years, like software. So I think we appear to have less time because we can only get 4 significant tasks accomplished a year instead of say 100.