Careful you don't fall off that high horse.
I'm a frequent and long-term Amazon customer (their first year, I even got some swag from them for being an early adopter). I rarely buy something on Amazon because it's cheaper, and when price is the deciding factor, it's between Amazon and another online retailer, not between Amazon and a local retailer.
I'm picky about what I buy, and I do not miss at all the days of walking into a retail establishment with the goal of buying a specific (shoe, gadget, book, whatever), being told that they don't have it in stock, and then either having to settle for something less than I wanted, deal with being upsold by some sales rat, or wait for them to order it and deal with another trip to the location. I don't miss at all the days of the $5 trip on the subway to buy an $8 book, assuming there was something at the bookstore that appealed to me when I got there.
Governments that think that levying sales taxes on online companies will magically cure retailer woes are morons, because for the people that are buying the stuff, it's selection, convenience, and then price. Physical stores are always going to lose the first, quite often the second, and at best tie on the third. And I bet the guys stocking the local supermarket would be happier with a full-time with benefits job at an Amazon warehouse than where they are now.
Retailers are middle-men. Good ones offer services and experiences beyond the mere exchange of cash for goods, but they're still middle-men, and if the internet has taught us anything, it's that it eats middle-men. Record stores, game stores, drug stores, book stores...