I asked once which programs you used. You replied that you were careful and did not use an antivirus etc. But which other programs, other categories, do you use or don't advise using. For instance, do you use an instant messenger, email client, browser, of course, and programming editors?
I am trying your way, without antivirus or software firewall, but with one of my email addresses using Mozilla Thunderbird and using the Firefox browser on another computer. I will surf and email an hour each day with that system; it is on my broadband account. I do have these addons in Firefox: Cookie Safe, Cookie Culler, and Noscript. I have the Allow HTML Temp addon in Thunderbird. The OS is a hardened XP Pro; you know, unneeded features and Services disabled. I'll report back occasionally what happens with my experiment. The system is behind a router. Should I do the experiment with it outside the router?