Wouldn't you want to fix the problem instead of giving up on it.
Personally, I think the school system's problems are created by parents not getting involved in their children's education. If the parents don't care about their children's education in school, I don't think they will take the efforts with their education at home.
Dude, you are WAY behind the times. The "education professionals" who infest the public schools DON'T WANT parents involved. The policies are deliberately intended to allow parents NO SAY WHATSOEVER in what their children are taught, and how they are taught it.
Check this out:
http://www.freerepublic.com/focus/f-news/1294232/posts
Public school officials complain that parents "don't get involved" and when they do, they complain or actually go out of their way to subvert them. I'm not saying all school districts are like this, but enough of them are.
I wholeheartedly agree with you. While I completely applaud homeschoolers there are some people who, for whatever reason, can't, and others who just plain shouldn't.
The schools, teachers, and the district where I live not only encourage parental involvement and input, but expect it. I know because my child attends one of the schools, as do many of the children of friends.