In the 2000s, I was born, moved to the east coast, learned to talk then walk then run then read.
In the 2010s, I learned to ride a bike, I got a sister, I did eight years of grade school and half of high school, lived on a farm with goats, and came to love math.
In the 2020s (so far), I lived through a pandemic, met my future wife, lived outdoors traveling for five months including paddling from Canada to NYC, did undergraduate school, married my wife, had my first child, and started working on AI safety.

If all goes well I still get at least five more decades!

2030s
2040s
2050s
2060s
2070s

Things will stay interesting…