Typical logical fallacy for device/gadget reviewers:
It's okay to think: If I want this device, someone else could also want it.
It's not okay to think: If I don't want this, then no-one else could ever want it.
For example, someone reviewing an iPad Mini and seeing a place for it in his/her life. It's completely fine to imagine that someone else, like you, could find a use for this device.
Now let's imagine someone reviewing a Cowon, a dedicated portable audio player. The reviewer already has a smartphone, a tablet, a laptop and HTPC. He doesn't feel the need to have a dedicated, portable audio player and gives it a poor review. "It's a useless device. I can't imagine anyone wanting this."
Really? To have a device that has superior battery life, better audio quality? You cannot imagine a single person on the planet to want this?
Is everyone on the planet you?
This is the difference in logic:
Scenario 1. There is somebody like me.
Scenario 2. There is nobody unlike me.
The first scenario is highly probable, the second is impossible.
To expand on it:
Scenario 1: If I can use it, somebody else could.
Scenario 2: If I can't use it, nobody can.
In the first scenario, we are in the realm of "possible," "could" and the indefinite "somebody."
In the second, we are in the realm of the definite - nobody (no one at all), and "can not."
Sometimes, the reviewer adds evidence with personal anecdotes "none of my friends," and "no one I know" and so on.
Reviews are subjective and personal, but there is difference between "I can't really see myself buying this" and "There is no way anyone would ever want this."
Subjective is saying you don't want it. That is the reviewer's opinion. Insisting that no one would ever want it and presenting that as a fact is neither fact nor opinion.