Do you think the people on this thread who prefer the 5/5s were complaining?
I thought they just voiced their preference. I think it's important let company know how you feel about their products. Perhaps Apple is considering to offer a 4" 6s in the next round (don't worry, they will still make the 4.7" and 5.5" 6s). More voice from the people who like the 4" size will help the cause.
I too prefer a 4.7" 6. But I can see why some people prefer a 4". It's none of my business what size they want.
On the other hand, the thread about "what color iPhone did you buy?" is a true winner. I came close to making a smarts comment, but I held my tongue and skipped it.