I agree with what Cal said, there is a difference between differing opinions, and those that continue to rip on something to garner a reaction. But it does lead into what JAK said in which I agree with in part of what he is saying.
JAK®;19177200 said:
Hating something isn't as healthy as liking something. That's psychology.
It's true that some people mistake concern or annoyance for outright hate, however.
In the real world most would say constantly complaining about something, or hating on something is actually unhealthy for you. Yet on the internet, all you see is primarily hate, through either jealousy, or hiding behind anonymity they garner a vast ego. If I hate football, I don't go to a football game and run around screaming Football sucks. If I did, I'm sure most would say I need a straight jacket.
However on the internet this seems to be (not in a good way) a norm. I agree that one should express their opinions and I would say most of the posters on here are great like that. However there are many that just spend their entire time going into a forum of something they don't like to constantly complain about something that can't be changed. To me that is bordering on "hating".
And I agree there can be people that don't allow others to express their opinions and respect them. I admit I've had moments of weakness and was bull headed, but most of the time if some one with a civil tounge explains they did not care for something and gave good reasons for it I'm cool with that.
But on these boards I notice anything that becomes popular, some just want to hate it because of that simple fact. But if one really does not care for it I think they usually express their opinion here and there about their dislikes but usually stay away from things they don't like.
Example I did not like Avatar. I gave my opinions for a few days about my dislike for it, however I don't spend my time in that thread, or go to Avatar forums just to complain again and again and again and again on it. Just as going to a football game all the time if I don't care for it would seem pointless. I think haters seem to be those ones that constantly "dislike" something and feel that they need to let some one know about it all the time. Why would you spend so much time and energy on something you dislike? But oh well.
But I agree there is a vast difference between having an argument and sharing ones opinions, to those that really just come in all the time because they want a reaction. I've seen it a lot all over. But there are a select few members that are doing this constantly. But I would say a vast majority of people on here are good at just being civil and expressing their fears or dislikes. However there are the few that don't do this IMO but they are few and far in between.