The last virus I fell victim to was a virus spreading around on diskettes with infected boot sector. That was 1991.
Since then the only viruses and malware running on my PC would be there by invitation. I let them in intentionally, had a look and kicked them out - fully in control.
Last week I just fancied getting a virus check of my storage devices and installed Bitfender. It modified my Windows BCD boot without asking and took over. It would not let me launch it on demand, no, it deemed itself so indispensable that it had always to be there in imperial role. It didn't like being offline. Kicked out in no time.