So did you ever notice that all the guardians are the same that some where some how you have a double and that the only ones that have that are guardians. And that the normal humans are diffrent. I believe that's because we are the army of the traveler like in the movie oblivion, and we just don't know it. And if you look at our gear it coincides with the "enemy". The hunters mask look like the fallen, titans looks like the cabal and the warlocks looks like the vex. That's because I belive that we are the travelers 2.0 army I belive the traveler is being chased by something called the darkness and so he go's to world's that have inhabitants that want to grow so he helps them by helping them he is helping himself cause he is secretly building up his new army. But after each world gets attacked and enough people die they turn on the traveler and he leaves. He did this with each one. Now he is at earth to weak and tired to move again and is putting all his effort in us cause he knows that if we fall he falls. He is good but bad at the same time but not in a evil way in a I know everything that's going but I'm not telling you cause you might turn against me sorta way. So he is trying to preserve himself. But in the end he is good for us. But that's just one of my theories. I have more but not enough time right now to go over them. Sorry for my grammar and spelling mistakes. If you hot any theories please let me know. Knowledge is power.