Valid points. However, I do save on shipping based on just the ease of use.

Most items on amazon I can get next day for free. Sometimes it saved my bacon (forgetting a gift or some household item) and sometimes I just get what I want faster. That aspect is very appealing to me.

If they remove the next day shipping or start charging I will reconsider because it won’t make sense to wait for stuff that I can easily go to a store and buy.

So yeah, they have free shipping but not on next day delivery.