The blade of the shovel is only one of three components. The grip and the handle also must be considered. And finally, aluminum tubing is lighter and stronger than old-fashioned wooden handles. The design of the shovel is just as important as the material it's made from. Modern snow shovels feature contoured handles that minimize bending and stooping.
Snow shovels are only part of the answer.
In a light snow, consider a snow pusher. It acts as a plow to clear snow out of the way without lifting anything. Today's snow shovel is manufactured from lightweight components that are ergonomically designed from high-impact molded polyethylene that won't rust, dent or bend. The plastics of 20 years ago rarely made it through more than one season. And ice scrapers, rock salt spreaders, ice melters and traction devices are nice to have on hand when the heavy snows come.