The internet is already made up of 99% crap content websites, you are much better off being the 1% that contribute some quality content to the internet.

If I personally land on a poor quality website, I leave it straight away. This in turn increases the bounce rate score for that website, and the search engines will in turn drop the position of that website in the SERP's. So if you want to obtain/maintain good rankings then quality content is a must.

Cheers,
Chris