If you don't mind sharing why you choose a certain faction please do.
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Personally I am not sure which to go with. In a previous MMO I have played, it seemed the side that tended to win 9/10 times would appeal to newer players - and reinforce the overbalanced field. I don't know lore, it's probably nice to know and I will probably take time in the future to catch up on that.
For now though I have to admit, I am hoping to formulate some more rational thought processing based on what others may have to say. Maybe someone has some good reasons why certain factions would appeal to me (or someone else) more or less.