Why doesn't Chrome render RSS feeds?
RSS feeds are planned for chromium/chrome. There is a bug in the chromium bug tracker for this. It looks like this isn't anything that they are in a real hurry on (the bug has been open for over a year). Of course, the alternative is to write it yourself and submit a patch. If it can get past codereview, you can get most anything in to the main repository.
EDIT: Looks like that bug has now been closed and the official answer is to use this extension.
There are some bookmarklets over at http://feeds.ramisp.org/.