Some trousers I own just about fit it inside but none of my jeans do with a good third of the device sticking out. That's not comfortable, practical or safe. I know people could say, 'well buy bigger trousers/jeans' but I haven't worn baggy jeans since the days when they were fashionable. I don't see why I should add to the headache of clothes shopping by trying to find jeans that fit a huge phone, or compromising my appearance. It's easier to get the smaller device which is big enough for a lot of people's needs.
Too many dudes wearing tight a$$ booty nut huggers that's why the plus don't fit right. Time to bring out them fanny packs lady's