Gosh, where to start on why I play Earth...
Probably the biggest reason I still play Earth is the people itself. It seems like everyone-knows-everyone in our community. It's nice because so many of us have respect for each other and we are all willing to make changes and get to know new people. Honestly if it wasn't for the people I probably wouldn't still be playing...
Another reason I really enjoy Earth is the way that the economy is set up. Not having the admin shop really makes for a weird but fun economy. Not being able to sell items right away for instant money can be quite inconvenient at times but it makes it so everyone has a much more equal shot at winning /top every month. The economy is balanced quite well in my opinion.
Lastly, the reason I still play Earth is because of the pvp emphasis. I haven't really been into pvp this season but it is nice to know it is there if I want to pvp. Seiges add a competitive side and helps broaden the course of the game. It gives something to do if it starts getting boring.