Personally I'm a completionist and I have a problem with people that think it's ok to just ignore half the content of the strike. I generally find that runners are people who lack patience and lack regard for their teammates. Runners run on ahead but if you have a single completionist they get left behind. In fact I bet you runners have a jolly good whinge about us frequently But here's the thing: a completionist is likely to get more loot and more xp than a runner. Want a legendary engram then be a completionist