Why am I became a vegan?

2years before now, I read a book "Skinny Bitch"
The book has some information of meat and dairy products. I was little bit care about it but still eat meat and dairy.
I ate Beef, Pork, Chicken, Sheep, Horse, and I think I have eaten Deer.
I also ate (or drank) Milk, cheese, sour cream, egg, yogurt, and many kinds of dairy products.

Since I live in the U.S. I realized that I did not eat meat and dairy products so much.
I eat vegetable a lot. Sometimes little meat.(Like only one slice of bacon.)
And also I rarely purchased fish. Because in Utah, fish is too expensive and not good.(I'm sorry to say that, but my home town is near by the sea. So I know great fresh taste)
Anyways, I thought I might not need meat and dairy products.

At that time, I found a movie called "Earth Rings"
The movie is really hard to watch. Actually I could not finish watching.
So, I decided to be a vegan.

Animals born for only die. It does not make any sense.
Cows always pregnant for give us milk. After she gives birth, their baby can not stay with her. It also does not make any sense.

I cannot say "delicious" when I eat meat and dairy.
That's why I'm being a vegan.
It's my decision.
I'm not try to persuade anybody because everybody have different opinion.
But I want to say that please know about where and how your meat and dairy came from.