GilAskan
Cynicism goes too far when the person at hand can no longer appreciate anything; when their hatred of everything overwhelms them, when they hate everything so much they do nothing but talk about how much they hate it.
One common thing I hear amongst cynics (and pessimists as well) is the phrase "I'm not being cynical [/pessimistic], I'm being reallistic". However, I've always thought that that sort of mentality is moronic. Looking for the negative in every situation is not reallistic; it's a focused effort to make things seem worse than they really are.
Actually I'm a very happy pessimist, I expect the worst, the worst doesn't happen, I smile because its better then what I expecting.
I'm also a vegetarian... and art house vegetarian, I eat meat, in an ironic way.