Guess you haven't come across a good one yet - there are quite a few videos of necromancer rocking the WvW - both in 1 v 1 battles with powermancer specs and in big fights with AoE specs.
My experience has been the same - if used correctly your skills as an individual necromancer player can make a significant difference in a battle. It is just not as straightforward a class as some others.
Speaking of having no fear of classes - I have no fear of warriors, thieves, mesmers or any glass cannon burst build, since because of my toughness + vitality based spec I can suck up a ton of dmg and yet melt their faces with my wells, so perhaps it is your spec that makes necromancers so helpless against you ? What spec are you usually running ?
EDIT: I have been focusing on necromancers ever since BWE1 so maybe they are a bit hard to get the hang of if you are not too experienced with them.