Dunno about anyone else here, but I've definitely been using Amazon since the late '90s when it was primarily for buying books.

My first order with Amazon was May 6, 1997. It was worlds better than traditional mail order at the time, and also way better than most bookstores for niche things like technical books. And when I had to deal with customer service, they were really on top of things.

As many have testified here, they just aren't like that anymore.