I am so fucking tired of everyone just shiting on Antivirus companies for the smallest of sins immaginable.
If you are well educated, I get, that you are able to manage the risks of browsing the net without any protection, but NOT EVERYONE UNDERSTANDS THE MODERN INTERNET DANGERS.
Do you really think, that PC being 5 percent slower is a bad trade for even a slight chance it might save their bank accounts? Come on...