As individuals, it goes both ways. As monoliths, women outspend men by a long shot.

I used to be in marketing and we had all types of data to support this. Women shop so much more than men that they often shop for the men in their lives more than the men shop for themselves. We would actually market products for men towards the women in their lives because we’d know they’d buy it for them.

The scientific theory as to why this is: Men were hunters. Women were gatherers. Hunters are K selected and gatherers are R selected. K selected animals have a finite food source so they ration. R selected animals don’t ration because their food source is more abundant and easier to obtain

EDIT: Some shorty grammar and to expand on the science part because I was being lazy earlier.