Something about Angel

These I've learned a sing named " An Angel". I think that there is two kinds of angels. One is with white wings , the other is with black wings. Now I'd like to ask a question," Which kind do you prefer?" For me, I like black ones more, because they can either love or hate something. Maybe you would say that they always do somethings bad. But there is nothing perfect in the world. The angel with white wings is nice. They can forgive everybody, even if he is a demon.  Everyone should have their own emotion. So I prefer black, which has clear cut idea of what to love and what to hate.

[Good work.  Remember to put a space after all periods and commas.]