Zelu.1692

Addition: rotation are ONLY relevant in PVE, in PvP and WvW the skills you use is mostly reactive and based on countering your opponent and, when the stars align, possibly get out a burst on them. Rotations are for PVE because in PVE you face a relatively static opponent with scripted and previsible behaviour.

In short: in order to maximise your damage output within a short time window, you need to combine your active abilities (buttons you press) in a given order to ensure that the most damage will go out in that time window. The way it works changes drastically by profession and build but essentially the order is determined by factors like: 1) a certain skill triggers one or more buffs when you use it, so you want to use it first so the big ability you use right after benefits from said buff;2) certain abilities have a cooldown and usually there is a way to optimise rotation so they are available again when certain buffs are available again;3) in GW2 certain active skills are purely utilitarian (e.g. knockback a foe, or trigger some protection) and those are usually excluded from rotations but used only when that ability is needed, meaning you alter your rotation to fit it in (e.g. when CC is needed for a breakbar or a group Aegis is needed because of a fight ability). This is why some rotations have moments of auto-attack/Skill 1 because it does more damage than another skill that is available but is purely utilitarian Understanding why your rotation is like what you see on Snowcrows or some other website is very important, because it means you understand the inner logic of the profession/build. And it allows you to adapt whenever your rotation is interrupted because of mechanics or other disruptions. Rotations are ONLY relevant in PVE, and not in PvP and WvW where the skills you use is mostly reactive and based on countering your opponent and, when the stars align, possibly get out a burst on them. Rotations are for PVE because in PVE you face a relatively static opponent with scripted behaviour. The point of maximising your dmg in a small window of time is because of at least the following two aspects: 1) a boss dishes out dmg at a certain rate and if in a Fractal your group manage to nuke the boss (thanks to optimal gear and rotation) at a faster rate than the boss can kill you basically no one really needs to bother about heals or much support; 2) at given points in time bosses might do super attacks or special phases and if you manage to kill hem before that then you can entirely skip the mechanics. Other reasons as well, but basically it comes down to making the Fractal run as smooth and fast as possible for everyone so they can go walk their dog, cook dinner or do any other thing.