On the other hand, I drive to Target to pick up curbside deliveries quite a few times a month, and I am almost only driving there just for that one trip. I would probably do the same if I was going to Costco rather than Target, I just hate the Costco parking lots in my city so I don't use Costco.

I don't know which of us is the more common scenario. What other sorts of things are you doing in the area when you go to Costo? I simply don't have that many things I have to drive for, so I don't have other errands to combine with my bulk good pickups.