You don't seem to understand why businesses create promotions. It's usually to get you to do something you wouldn't normally do, not to reward you for what you (and everyone else) are already doing! (The latter would be just the bank throwing money away.)

And this is a targeted promotion, and who knows how they're doing the targeting. They're probably (among other things) only targeting people who don't already use the card for everything, and thus are assuming you have other cards, and are trying to get you to use this card more for "random" stuff.

And obviously someone shops at department stores, office supply stores, and computer/electronic stores, because otherwise those physical stores would all have closed by now. It sounds like you switched 100% to online buying, and didn't realize that far from everyone did.

Many people want to see the TV they're going to buy. Many people want to try the feel of the keyboard on the laptop they're going to buy. Many people want to feel the towel they're going to buy. Many people need office supplies now, not after a shipping delay. A big part of most department stores is clothes, and where is the dressing room on Amazon?