A free 3D mmorpg with a VERY BIG world to explore, someone know ?

I wanna to play a free mmorpg 100% free with a VERY BIG world to explore, with a lot of cities and quests to make, a LOT of variety of itens, armors, clothes and weapons to use

I was playing WoW in a private server, however, I gave up: so much bugs, and in a lot of times the server is offline, is a waste of time to spend time playing in a private server, I never want to play a private server again. I wanna now a game 100% free.

I tried to play the REAL WoW ( paying for it ) but, is impossible: in Brazil ( my home ) not exist WoW to be sold, and I not have a International Credit card to buy things in dollars from others countries and I not wanna to ask for help for someone with a International Credit card to buy it for me.

Exist a lot of  brazilian sites that sell "pay cards" of  WoW in Brazil, but, they are not reliable places to buy.  I know a guy that purchased it and It come with a invalid serial key, and I already know of others places that sold fake "pay cards" or even others places that really sold the real thing very well, but , delayed more than 6 months to delivery the serials and more 6 months to delivery the pay cards numbers... 

Really, to try to play the real WoW is a waste of time in Brazil, not exist a place that we can buy it ( now you understand why have exist SO MANY brazilian guys in private servers. We not have a choice.

Then, I not even wanna to try to buy WoW.  Then, let's forget about WoW and about private servers.

However, I really wanna a free game that have some similarity with WoW to play. I wanna a games with VERY BIG world to explore, a lot of cities to visit, a lot of quests to make, lots of differents armors to use, lot of different weapons, etc...

I already played some free mmorpg, but, some of them have a small world to explore, some of them have few cities, few quests and worse, some of them have few armors and clothes to use in our toon. Is so boring to play a game that ALL players characters are always using the same clothes or armor. I wanna to distinguish my toon. to customize my toon wearing a different clothes or amors.  a example of it is the game Shaiya. ALL characters look the same, same clothes and armor in all. this is not fun. and have others games like this too, but, I not even remember the names ( I already played a lot of free mmorpg, but, all of them have weird names. I just remember now of shaiya because is the most recently that I already played.

I not care anymore like in the past about PvP. If the game not have PvP or If have PvP I not care. I just wanna a game with the features already requested by me in this post. and please, only suggest 3D games. I hate 2D games.

Someone can help me, please ?