I went to watch a KBO game yesterday and ended up in tears lol

I went to watch the game all by myself yesterday like a lonely old man
There was a family nearby—a couple and two sons (looks like an elementary schooler and a preschooler)
The dad caught a foul ball and handed it right to his son
The son was jumping for joy and hugging his dad
Watching them
I was smiling to myself, feeling happy for them
But then it turned bittersweet and my eyes started getting misty
I'm just saying how it was ㅜㅜ
Aaaaaaaah