If my wife wants to go (she rarely does), she is happy to go on her own.
Don't get me wrong, I'm not a monster - if we need something, I'm happy to go. What I absolutely won't do is the moronic waste of life and the World's resources that an aimless shopping trip represents.
I see shopping as a necessary evil and really don't understand people who plan to "go shopping" as an activity when they don't actually need something.
"What are you up to this weekend mate?"
"Going shopping on Saturday morning"
"Oh yeah, what are you getting?"
"Dunno really, just going for a...