I don't think so. It seems to be mostly a thing in the US, I presume for aesthetic purposes?

In the UK we just leave them. For most roads, pavements and grassy areas (especially public areas), it's usually left alone, the leaves are good for the soil anyway. Admittedly they can be a road hazard when you get lots of layers of leaves, but then so is ice, mud, frogs etc. I think road-sweepers might take care leaves in particularly hazardous cases and in busy city areas, but I've rarely seen them.

I’m not even sure humanity wants them.

I lived in socal for years in a home where the property management paid for landscaping. Every week, they would come and use leaf blowers to blow my dust onto my neighbor’s lawn.

The next day the neighbor’s landscaper would come and blow their dust onto my home.

The SoCal desert has a reputation for being dusty, but I think it is just a result of leaf blowers being used on unpaved driveways and an unintentional war between neighbors who haven’t even consented to the hostilities.

To ask this question, you must live in a city.

My pool area. My gutters. My roof during fire season. Underneath deciduous trees in the fall.

A cordless leafblower is one of the best things I ever bought.

For managing large property, absolutely. As long as we play sports outside near falling leaves we need leaf blowers for safety. Good luck clearing leaves off a baseball or a football field with a rake, it would probably take an entire weekend of labor instead of a couple of hours.

Need, no. I do want a tidy yard and to not track dust, leaves, and twigs in to the house.