I have never bought or used any premium features on games, and I object when the game is basically unplayable because you are only using free items.
However I do not resent the maker of an excellent game the right to make money for the many hours of hard work they put into making the game, ESPECIALLY when you can play through the whole game without having to buy anything.
That is definitely WAY too hard for an easy badge!!!!!!!11!!!1!1..... . . . Oh wait, that's right i just clicked and used my keyboard randomly... (social commentary in a game, great way to reach an audience) 500/100.