True, we did get along fine without them, but at the cost of injury, death, and property damage. "Backover crashes" cause hundreds of deaths in the US each year.
Add the backup camera to the improved restraints, the collision warning system, the blind-spot monitor . . . and soon you're talking about some real money.
One can argue about whether this is good or bad, but they're not really luxury toys.
"Hundreds" in a country with hundreds of millions of people is inconsequential. The vast majority of people never backed over anybody because they used tricks called looking around and situational awareness. Techno gadgets meant to solve non-problems are toys in my books.
No, humans are not cavemen, as cavemen lived thousands of years ago and had a different lifestyle than modern humans. The term "caveman" is a stock character that became popular in the early 20th century.
https://www.nhtsa.gov/sites/nhtsa.gov/files/documents/13237-...
Add the backup camera to the improved restraints, the collision warning system, the blind-spot monitor . . . and soon you're talking about some real money.
One can argue about whether this is good or bad, but they're not really luxury toys.