Google not liking other people advertising ?

What's the deal Matt Cutts. What's wrong with other people renting text links to drive traffic to people's sites? I just think the way Google thinks sucks about text links. I know Matt said to use the nofollow tag but come on that's just so not the answer. Google needs to develop some kind of automated way to determine if a link is bad or not based on the site content. Like if I am an SEO kind of site and I sell links to Banks Google should be able to determine that I am selling PageRank and non related links. However if I am that SEO site selling stuff to Yahoo Search Marketing Google is saying I can't sell text links to Yahoo because it's unethical. Really Google needs to be able to determine what's right from wrong.

I agree ... I use the nofollow tag in my forums because I am afraid that members will link to bad neighborhoods before I get a chance to moderate.