'Local' stores were/are often ridiculously overpriced, had a very limited range, and it's not like we're talking about independent stores either. Many of those were killed by the unfair practices of large corporate chains who would sell at a loss. Before amazon killed chain mall businesses, the mall killed independent businesses on the high street.
Packages are delivered to me personally. If I'm not there, they don't deliver and are forced to try another time.
No need for a PO box, as small independent stores and grocery stores often have a side hussle as a pick-up point. You go to pick-up your parcel and buy something in their store or do your groceries.
Amazon prime is entirely unnecessary. You simply have to wait a bit longer.
You can find independent sellers on amazon, then if their product is good, you buy from them directly next time around.
Thanks to amazon, ebay, etc. it's become far easier to buy second hand products. In the past you'd have to go to a second hand market, garage sales or visit twenty vintage/antique stores to find what you needed.
Amazon is evil though. So, yeah.
But there are perfectly rational reasons to use amazon.