I haven't had a good experience with those pick-up services either. For the amount of time I've waited in my car for the "ready" groceries, I could have just done my shopping.

And fuck the whole substitution thing. Now I have to make all the goddamn decisions I would have had to in the store anyway. Plus, if they don't have X, I'd get Y, but you're offering Cherry-X instead. So after my shopping, I still have to go shopping.