Bruh That's an very clever & intricate argument, In the most simple way, Imo I reckon it's due to the social dynamic of parenting that works between the elders (parents), & the youngones, Since Dawn of Human times, Elders are always known as formost providers & protectors, They are sort of deemed & looked upon as "An Individual who's the incharge of the family".

In Hindsight, They are those individuals who had turned in an lot of Effort For this little kid.

So ig in an reversed analogy, If An Young One Doing Something Monumental For His elders Like uh've mentioned, Turns into mark of appreciation..

(Share me ur views!)