I am surprisingly annoyed by fishing. The concept is very similar to WoW (which I enjoyed countless hours of), but in GW2 I very much dislike it...
For example: about 2 hours so far fishing for the elusive Giant Gourami in DE. 550 fishing power, various baits, multiple days and wasted time just for Prima Donna. I'm following all the instructions and guides to no avail. This is frustrating to say the least.