For real, Shadow. You can't honestly say you believe that anime is the only type of animation which skews things out of proportion or makes artistic changes to enhance or exaggerate emotions, images, sounds, whatever.
Plenty of American cartoons had huge eyes, tiny mouths, disproportionate faces, hands with only three fingers, undefined legs, etc. So you can't really say that it's only anime. Of course, some anime has been known for its distinct style, but not all of them are drawn like that. There are several series and movies out there that have a much more realistic image.
Furthermore, I have to agree with Treebob. Anime emcompasses several different genres, it's simply a different "film-style". Without stepping on toes, I do think when people say flat-out comments like, "I hate all anime" it kind of makes me think they haven't really experienced very much of it. But that's beside my point.
As for squeaky voices, that really is just because the Japanese have different voices than most Americans. But again, there have been American cartoons with highly annoying and squeaky voices. Not to mention, you could watch the dubbed version and they usually have more tolerable pitches since they're American actors for the most part.
I love anime and manga, so maybe I'm a bit bias, but it sounds more like you aren't giving it a fair chance. Besides, Hentai (or anime porn) isn't any different than the porn we have here that's hand-drawn. The fact that it has it's own name isn't weird at all. I wouldn't refer to our porn as "a movie" anymore so than a Japanese people would say that anime is hentai. They are entirely different things. Yes, some anime has been redrawn by a different artist and marketed as porn, but that's because their copyright laws are greatly different than ours.