For a person to truly value a smile, there has to be an event, a catalyst that makes them value happiness above all else.  For Pinkie Pie, that event was Sunshine..."
Artwork provided by Colour Curious: https://colour-curious.deviantart.com/art/Why-Pinkie-Pie-Smiles-credit-page-747169570
Written by Anonymous Pegasus: http://www.fimfiction.net/story/19256/why-pinkie-pie-smiles
https://www.fimfiction.net/blog/813106/why-pinkie-pie-smiles-narrated-with-illustrations
EQD Feature: https://www.equestriadaily.com/2018/0...</a