You probably have noticed this, but anyways,

There seems to always be a complaint about something you know of or are looking at...
Like lets say, you are looking at some computers on amazon, A lot of times, you see a complaint about the product that your looking at, and there doesn't seem to ever be a product that doesn't have a flaw that people won't notice (People would Alot of times find something that they didn't like in it).
The reviews are mixed with different good things and things people don't like also.