What technology would you be better off without, why?

Expensive hair curlers that cost the Earth, but don’t do much better than cheaper ones. The cost and power they use must be excessive for people with low incomes. The fact that they often come in “exclusive” colours so they can charge more is ridiculous.

The amount of effort to make something use the Coanda effect to pull hair round onto a heated surface? Is it worth the effort? I wonder.