Why are NFL Players Dropping the Ball at the Goal Line (A Rant)

Ah, the sweet thrill of scoring a touchdown: the roaring crowd, the glory of spiking the ball, the highlight reel immortalizing your name. Yet somehow, some NFL players manage to snatch defeat from the jaws of victory by dropping the ball right before the goal line. Why? Is it hubris? Butterfingers? A secret contract clause that rewards almost-touchdowns? Frustrating