To be brutally honest, the comment is insensitive and a bit cruel. Fact is that negative people tend to be hurt people. Do we all seek the company of positive people in our lives? They are nice to be around, but to exclude others because of a temperament that might be a bit 'off' is a bit shallow don't you think? After all, chances are pretty good that you will be there too some day... it's only a matter of time.
I was just about to compose a reply to this when I read...
People, ALL, would rather be around someone positive than negative... its a simple fact. There is nothing wrong with saying that... it doesnt communicate that you will never accept a bad mood or a bad day... we all have them... however, like you, I dont like someone who is always bitter and angry... that is way too many issues that they need to deal with and shouldnt blame everyone for not wanting to be around it. no one does.
We all have our ups and downs, when we aren't very good company, but some people have issues in their lives that need internal resolution and they are negative ALL THE TIME. These are the ones who have the people around them constantly walking on eggshells. A good litmus test I've found is the phrase 'doesn't suffer fools gladly' in their profile, if I see this it tells me this woman has no sense of humour, any man who dates her best not put a toe out of line lest she no longer 'tolerate' him.
I choose not to be around people like this the same as I choose not to be around alcoholics and potheads.
There is a difference between somebody who is just having an 'off' day and someone who's perpetually morose.
I saw a very funny Saturday Night Live sketch which illustrated the point perfectly. This lady was invited to Thanksgiving dinner and, no matter what anybody at the table said, put a negative spin on it. One by one, everybody left the table until it was just she and the turkey left, and finally the turkey got the hell out of there too!