For home users, I strongly recommend running only 1 antivirus at a time. However, I keep downlaoding and executing viruses on my PC hence I feel that it gives me a layered approach towards security. Also, I like testing antivirus softwares hence I run two at a time for fun. ATM, I have Norton 360 V4 and Avast 5 together with
NO issues.
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oh yeah, who says there wouldn't be issues later
lol jking.
But you got your point across. A majority of us don't need the extra layered security. I don't go online and download viruses and execute them for the heck of it
thats like finding the right gun to blow yourself up and seeing which antivirus fixes you back the best:shock: I guess curiosity gets the best of you eh?
I would recommend you to do that on virtual machines, because that significantly helps you avoid catastrophes XD. I'm guessing, since you are very reckless with your computer that you don't keep many important data on your computer. I keep all the videos, animes, homework, documents, pictures (tons), music (even more) on my computer. There are cases where viruses will kill off these files even if they are on an external hdd. So, I tend to avoid viruses where I could =). Now, i
do sometimes run into rogue antivirus sites and malicious sites, and I like to download the exe files and test them, but on vms only otherwise, I would kill myself. :devil:
I find that MSE, windows firewall, and sophos scanner are more than enough for protection for average home user, and windows virtual pc or virtualbox for testing any software (including viruses) before installing on the host.
btw, Im repping you because I respect the fact that you supported your point,
not that I agree with you =.=
I haven't heard of anybody that suggested more than one antivirus. They will interfere with each other. One virus will pop up. Antivirus A tries to block it. It quarantines it. Antivirus B notices that the virus is on the computer but it doesn't know that the virus is being quarantined. So it quarantines the definitions of antivirus A. Antivirus A, notices what it deems suspicious behavior from antivirus B. Antivirus attempts to quarantine antivirus B. In the meanwhile, a virus comes into the computer, because neither antivirus are doing anything besides to each other. 
,....which means not significant at all....
