I don't see how any computer can be flexible enough to be a general purpose PC with full freedom of customization and at same time be invulnerable to viruses and bootkits
The only way to make an OS more secure is iOS style DRM walled garden sandbox lockdown.
If what you say is true, why are Android, OS X and even Linux susceptible to viruses and rootkits? For example, Java, Flash and Adobe Reader PDF exploits are all the rage now, and OS X and Linux are as vulnerable to them as Windows is.
The only way to make an OS more secure is iOS style DRM walled garden sandbox lockdown.
If what you say is true, why are Android, OS X and even Linux susceptible to viruses and rootkits? For example, Java, Flash and Adobe Reader PDF exploits are all the rage now, and OS X and Linux are as vulnerable to them as Windows is.