You've all seen my arguments for having rogues top the DPS meters. We're the only pure melee DPS class, meaning we have the most specific role. Yellow is a great color, and so having a nice patch of it at the top of Recount is awesome. You get the idea. The fact is that rogues are known for their DPS, so doing lots of it becomes pretty important in succeeding.
Even with this huge focus on DPS, we do have one other trick up our sleeve. Back in the days before balance, the developers had to find a way to ensure that every class was brought to a raid. Hybrids could bring powerful buffs, bosses would use debuffs that required certain healers, and there was always a boss per tier that you needed a warlock to Banish. Even the DPS-focused rogues had a special niche to keep them getting invited: Kick. A boss would be designed with an ultimate ability that needed to be interrupted, and there was nobody better at that job than a rogue.