Because if you don't — if you miss a desperation end-of-the-shot-clock 3-point heave launched with four-and-change left in a Friday night blowout — you could miss the ball hitting a spot on the backboard that you've never seen it hit in your basketball-watching life. Certainly not in an NBA game, and certainly not from straight away.
Also, sorry about your left shoulder, which you separated during Sunday's loss to the Toronto Raptors, ending your season just hours after you'd inked a deal to stick with New Jersey for the year's final three games. These are the kinds of things that happen when you play for an undead team whose fans can do little else but wait "for the NBA deities to put [them] out of their misery," as Danny Savitzky wrote at Nets Are Scorching after last night's affair. Just two more games, friends. Courage.
Many thanks to our friends at Outside the NBA for the clip.