I can't stand useless results and I wish they'd do a better job of filtering out obviously fake auto-generated and parked domain sites.
Sure. I'll wait for you to write some software that filters out all the spam and malware I get as well with a 100% detection rate and 0 false positives.
People who do SEO work out the loopholes in the filtering and ranking algorithms. Its easy for you to spot that its a fake site but making software that does it perfectly all the time without knocking out any real sites is hard. There have been plenty of lawsuits because Google and other search providers have altered their ranking system so somebody who used to be listed high on the page suddenly got dropped totally or lowered in the ranking.