A web site today is nothing more than an application that happens to run partly on a server. Any connection to a real, specific human is entirely voluntary. Cookies are currently the only efficient way to implement many of the functions and features that commercial web sites need to provide. All that said, I do think that loopholes that allow a server in one domain to read cookies supposedly only available to another domain violates the basic security idea of cookies and should be prevented. I don't like waiting for or looking at banner ads any more than anyone else, but, as for Doubleclick, it sell ads.
Ads give sites revenue.
This allows sites to do more neat stuff and provide better service to customers, i.e., us. Doubleclick's ability to track demographics means they can charge more for their ads, which means more site revenue, more neat features and better service to us. More power to them. This needs to be strengthened. I think this is a little strong.