I am not sure most people hate 8. That is a strong word. Certainly there are some who dislike it very strongly and have gone to the effort and expense of returning the machines or upgrading to 7.most people hate windows 8.
Put simply, people will buy something either because they need it ( e.g. water ), or because they like it.
It is pretty clear a significant number of potential customers do not like 8.
One might leave the sludgy green jumper on the shelf at Marks and Spencer - because one does not like it. Does that qualify as hate?
A distant aunt might give you the sludgy green jumper as a present. You might say to yourself/your friend - yuck - I will take that back and get something else. Does that qualify as hate?
As a result, the sludgy green jumpers do not sell very well.
There are other factors , of course. The green jumper doesn't sell at $39.99. But it may if they reduced it to $9.99.
Would that mean everybody has suddenly started liking the sludgy green colour?