We picked an odd number to tribes as we want our Ark server to be simply survive. Just because we're all friends IRL it doesn't mean we want to sit in a survival game and just hold hands. We want our Ark server to be a basic survival situation where it takes getting along and working together to be part of a tribe. Tribes can also help each other or they can attack each other. Think of it as The Walking Dead. When you wake up on the Island you have nothing, the first person you meet should offer assistance to help you get started and if you join their tribe or go off on you're own way, come what may.
Have fun everyone and don't cry it's just a game.