The web is great when you know exactly what you want to buy. Brick and mortar is great when you’re still deciding.
Web is very very far from solving the browsing problem. Sometimes I know I want <new toy> but have no idea what exactly I want. So you go to the store to look around.
Sometimes I also like to ask the sales associate, “I have so and so nephew, what should I get for them?”. Web still sucks at solving the librarian/curator/advicegiver problem.