User blog comment:Smartbook/What do you think of Dave?/@comment-4742462-20150107045938/@comment-25285054-20150109190001

Sure, but I don't think "then sky and dave lived happily ever after" would have been much better either. The outcome of that couple was predictable from the start considering it started in the second episode, but I don't think doing exactly what we expected was the best idea. (Nor do I think Sky and Dave really deserved a happy ending either, considering there was pretty bad actions from the both of them.)

In any case though everything Dave did was under his own decisions, so there's no "the writers did it" here because he wasn't ooc. Just because you didn't like the outcome of his character doesn't mean we can say "the writers ruined him", the bloodthirsty pyscho we saw in the finale is clearly his true nature.