Everyone is always arguing on here about having multiple characters whether the same 3 or all 3...
I know it aids levelling up quicker and gives your more opportunity to raid and nightfall more but tbh I'm just happy being a lone warlock..
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I technically have two but I haven't played the second one in a very long time. Got him to level 12 and just got bored running through the missions again. So basically I use one.