Hey, I never said that diversity had no value. It does, because of precisely what you said - too little diversity leads to stagnation and extinction.
I was just pointing out that all emotional value-judgments are equally wrong (or equally right) since some people who posted seemed to be under the delusion that there is scientific basis behind whether it's better to kill something cute or not, or something like oneself or not.
They're two separate issues, requiring two separate means of analysis, and attempting to cross them only leads to misunderstanding.