Nothing lasts forever in wrestling. Top-draw guys like John Cena or Brock Lesnar can consistently deliver box-office main events at PPVs for a while, but their time to step aside will inevitably come. And when it does, who will be the next Cena or Lesnar to lead the charge, and will they be strong enough to put the weight of the company on their shoulders?
Fortunately for the WWE, they're currently knee-deep in new and exciting wrestlers who could one day fill such big (and intimidating) boots. With a steady production line of talent coming into NXT, there is a wealth of riches to pick from. We've already seen the likes of Seth Rollins, Dean Ambrose, and Samoa Joe main event PPVs following their ascensions to the main roster, and the next generation of superstars will surely follow.
And whilst there are no certainties of attaining such a headline status in pro-wrestling (just ask 3MB-era Drew McIntyre), with the right tools and work ethic, climbing to the top of the mountain is always a real possibility.
Not all of them can make it, but for these select few the opportunity to play out their childhood dreams in the main event is tantalizingly close.