PvP - Wars were a really big and fun aspect of the server, but it's boring now. 2 alliances have completely dominated the server and we won't see any other big relevant nations showing up. It's basically over. Leaders now will continue to be leaders and anyone who dares create another nation will immediately be crushed if they dare to try and expand or will simply have to stay as a small, irrelevant nation permanently. The war between the alliances is slowing down and soon one side will quit which will be the death blow to nations. The nations server deserves a full, clean reset to restore the playing field to an equal status for everyone.
Map - The world is looking worse for wear. Every square inch of Europe is griefed or settled and it's getting bad elsewhere. You can't go anywhere without running into pillars and floating fruits. It's awful. This cannot be solved in any other way but a reset.
Length of nations - The nations server has been running for over a year. Most people have done the things they've wanted to do and grinded the things they need to grind. Combined with the political situation, this means there's nothing to do. It's gotten to the point where a lot of us login to run around our town, talk to people and log off. The only solution is a reset.
For reasons mentioned above, a lot of big players have stopped playing and now are waiting for a reset. This might seem a surprise as you've said countless times that a reset won't happen so soon, but it's happening. Before you reject it, please just consider opening a poll to decide.