You do not. But the people who eagerly jumped to smart homes, and voice assistants that are always on, to which privacy might as well not exist... Are going to love their own "Jarvis" which they can give shopping orders to while in the kitchen.

Basically, the Sillicon Valley "smart fridge" episode. Or even better, the Modern Family "smart fridge" episode.

You're kind of echoing exactly what I'm getting at though. The difference comes down to trust. Maybe today we don't trust that one of these LLM apps is up to the task of buying things, but there was once a time where people didn't trust that if you click a button on a website a product would show up at your door. Over time, we came to expect things like order received emails, status updates, and the best companies will show you where your product is on a little map as it arrives to your house. Now most shopping is done online. Convenience won. There are still barriers to shopping online like too much choice, selecting sizes, and very personal constraints. An agent can know you're in the market for a new phone and can help you pick out a new one, then keep an eye out for deals. Maybe your agent will know your sizes and buy shoes that always fit. It's really not that wild of a concept.