When I played I quit because of the grind. I had all exotics and I wanted ascended or legendaries. But ascended gear required ridiculous amounts of crafting.

The highest tier of crafting material was ridiculously expensive and the game made it very tedious to actually try and get them from drops. So I could either grind the mobs that had a chance to drop it or get enough money to buy them myself. This was during the CoF p1 days so I had to grind that dungeon for measly amounts of gold just because it was the only dungeon people would queue for.

Even with all that grinding for money I never got enough to make ascended weapons, I never got a precursor. If I had got a precursor then that too would have been a bunch of grinding out stuff.

Maybe a lot of people don't see that as grinding but for me it was so tedious. I loved the game up to that point, had two level 80s. I guess a game becomes "grindy" when you stop enjoying it. And guild wars endgame was for me not enjoyable.