Antivirus software worries me

When i first had a pc some 20 years ago antivirus programs were not really needed but available …

15 years ago they were available and used often as viruses were popping up …

10 years ago we all needed an antivirus with the dawn of the internet and they used to take some 10 minutes to scan the computer …

5 years ago if you did not have one you were stupid and would no doubt have a virus, they took maybe half hour to scan your whole computer …

Nowadays we all have one and use them regularily but they can take up to 2 hours or more to scan your computer …

In ten years time an antivirus will probably mean having a day a week off the computer while it scans …

Well, think about it, computers get bigger, viruses bigger, better and more prevalent but antivirus software does not get any quicker!