Why? Most people can't even use a word processor or spreadsheet right now, let alone comprehend algorithms and programming.

Besides, we all drive cars and we all use refrigerators and air conditioners daily. Not everyone knows how those work or is able to fix them. If they did, we'd be a world of "jacks of all trades and experts in none." That's not what got us to this point as a technologically advanced civilization.

It's far more important for everyone to know how to drive properly and safely than it is for them to know how to perform maintenance on their cars. In fact, having everyone do their own car maintenance would probably be just as dangerous as putting programming into the hands of people who don't know how to avoid phishing attacks and computer viruses.