Not sure if troll but as others have said, each class has a different trinket. some of them are very good and some of them are very bad. You should always have it in your bags, but how useful it is can be situational and depend on your race or class
For example, Druids have probably the best trinket because while they can shift out of many forms of CC, their trinket removes other things they can't shift out of. As a different example, the Rogue trinket only works on Fear, Charm, and Polymorph. So if you're Undead Rogue, then in most situations it will be much better to wear other trinkets because WotF can do 2/3 of what your trinket does without taking up an equip slot (although you'd want to wear the trinket in, say, a duel against a Mage). So yeah, it's situational and depends on race.
Anyway, the 2 best PvP trinkets in the game are Shadow Reflector and Ice Reflector, and any class can get those
