I completely understand your position @walkonby - used to be the way I felt about SDM as well.
It is a bit bothersome for the extra trip, but it is worth it if it's not too out of your way. I don't buy any of that stuff you mention either, and I never buy products unless they are very close to (or the same) price as other stores, but thanks to email offers and careful planning I've saved up enough points to do 4 super spends this year. That's $840 and definitely worth it for me.
My favourite is when I get 3,000 bonus points when I buy $10 in food and snacks. 2 bags of milk and 1 pkg of eggs is just over $10 (and the same price or lower than the other stores) and the value of the points on a $210 spend event is $6.63!!!!