The world may not of ended but to of people have been hurt by malware ruining their computer, cryptolocking all of their company's files for ransom, stealing all of your login credentials, stealing cryptocurrency, taking secret photos with your webcam, screen recording what you are doing on your computer, etc.
The "personal computer" has a terrible track record.
Just like people get robbed, it is as common as that.
It doesn't mean one can't buy nice things because one is afraid of being robbed.
For many decades, people have been mistakenly putting diesel fuel into their gasoline cars, yet we never outlawed diesel vehicles. You can only do so much to protect people without destroying their rights to their property.