Grocery delivery is extremely important for people with disabilities, people without cars, and people who are otherwise not able to burn an hour or two going to buy groceries. It's not just something for rich programmers.
When I order groceries from Safeway the extra fee on top is pretty small and their employee brings it up on a cart and carries it all inside. This means that it's much easier to buy a bunch of groceries in bulk, which means less trips to the grocery store and less orders, helping make the fee amortize out a bit more.
Safeway's service actually offers more fresh stuff than I can find if I visit a local store. The Safeway closest to me is space-constrained (downtown San Jose) so in practice they only stock around half of the things I can get via the delivery service.
Attaching "lifestyle" as you have used it imply that it is a choice for Aspergers. For many, this is simply not the case. As a dad with two Asperger sons, somedays I wished that it was a choice and can be consciously switched off.
The joke wasn't on people with Asperger's. It was on people who don't, but prefer to reduce interaction with others (which they often deem inferior, maybe?) and who decided to appropriate the Asperger label. I hoped the sarcasm would come through. Sorry.
