This may not be true for all, but it is for some I know!
Guys out shopping:
"May as well get what we need while we're here"
They proceed to put it two or more of everything,
so they won't have to come back in a long time
(they do that with groceries, too, on a bigger scale).
Two big packs of socks,
two shirts the same style, same color,
two pants the same color,
One trip to big store in town= maybe a couple gallons of gas.
Gals out shopping:
"Oh dear, I'd better not spend all that money;
I should be frugal;
I'll go home and think about it."
They drive home,
think about whether they really need it or not,
go back the next day to take another look.
Can't make a decision.
Go home to think about it some more.
Go back again and buy the item,
but only one.
Then after a week of wearing it or living with it, they say "I think I may get another..."
Drive back to the store to see if there are any left.
Buy one in a different color.
Four (or more) trips to big store in town= empty gas tank.