When is a phone too big?

[S.Peelman]

It's funny how mobile phones used to get smaller and smaller and everyone wanted the tinest phone, while now they get bigger and bigger.

I think they're getting too big with each new iteration. To take iPhones as the reference point; I have an iPhone 5, which I think is about the size I think they should be at most. I was actually more comfortable with my old 4, size-wise. I think the 6 is already a bit too big, let alone the 6+. I don't get why it's so popular, way too big and cumbersome. I wouldn't even want that one for free. Well, I would, but just to sell it...