First, Why are all the girls so..perfect..
It depends on the anime you watch, since there are plenty of animes with girls who aren't so perfect. However, many animes do tend to idealize girls and women since they are intended mostly for a young male audience who wants to see that kind of stuff.

Second, I rarely see any black people Only white people with big eyes
First off, this is because Animes are usually set in Japan. Second, they are not white people, they are usually Japanese who are in Japan. Some animes, though, will be drawn in the same style as other animes set in Japan, but will be set in Europe. One way to tell is the hair color: Europeans and Americans in animes tend to have lighter hair.

And this leads me to my next question, Why the big bubbly eyes?
Why does Die Hard have explosions? Why is Paradise Lost done in poetry, not prose? You may as well ask these questions, because the answers are the same: it's a matter of style. It is simply the style of anime. I personally like anime eyes. If you don't like them, that's fine. It's a matter of taste, too.

Lastly, Why do the plots change so fast? I miss one to two episodes of a anime show (like naruto or inyu-yasha) ad im lost, despite the re-cap thing.
Not all animes are this way, so I can't judge.