For one thing, "we" would not all have evolved into the same thing because we don't all live in the same environment. Fish are fish because they live in water, for God's sake.
Refusal to admit -- or even attempt to understand -- reality is closer to Satan than evolution is.
Yup. And they seem to do quite well there, they seem to be happy there, they are well accustomed to it - so what need was there for them to grow legs and transform themselves into totally different creatures?
Note: Any which way you answer you are refuting your excuse for evolution.