Laughing at others ended up laughing at ownself

When i boarded the bus back to my hometown, I started recalling a piece of my memory which i find rather amusing at that time- it about my cousin working in Hong Kong meeting his dad in a long time. I can't find myself to understand the picture of their face- with laughter, exhilaration as if something valuable that was lost for a long time was finally found. As i kept thinking along the way back, i was thinking, isn't it the same i was expecting to be able to once again see my family, the excitement and joy was overwhelming it was about to burst. I found it was a folly that i would laugh at my cousins and his dad reaction back then and doing it the same now. It is because i had finally taste the bitterness of apart even for a little bit that i am able to understand what seems to be comical back then to have such depth of a event. Hence, I finally understand not to assume something to be trivial just because you do not understand what is behind the riddle and I was laughing myself for being so ignorant back then.