system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we perceive time going by quicker as we get older?

As a kid, it seemed that a summer break, which was only 2 months, would last forever. 

When you're older, and/or have your own kids, it seems like years go by like nothing.
gpt
When you are 1 year old one year constitutes the entirety of your
 life. When you are 2 years old one year is half your life. So just in sheer numbers every year becomes a proportionally smaller   part of your life as you age.

Also things seem to speed up because your brain is more likely to store novel memories. As you age you experience level increases and the rate at which you encounrter entirely new situations drops. So you end up having fewer novel encounters and formulate correspondently fewer memories.

To ''slow down'' time try doing and learning new things 

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