There was a time that running Windows absolutely required you to use an antivirus solution. It was crazy not to. Those days are past. Now you have to be crazy

There was a time that running Windows absolutely required you to use an antivirus solution. It was crazy not to. Those days are past. Now you have to be crazy to run one. Even setting security aside, I think antivirus packages are the number one source of instability and weird performance problems.