Amazon Prime is one of the most popular loyalty programs in the country, and Amazon customers enjoy very high satisfaction levels. However, it seems that people are sorting themselves out into pro- and against-Amazon, as they are in so many other areas. (The 'against' group is definitely the minority.)
Amazon prides itself in operating on the edge of innovation, and that means breaking lots of rules. I don't object to that behavior in general, but Amazon often ignores human values which are core to me, such as fairness and protecting the vulnerable. That's why I don't buy from them if I can avoid it.
The Verge: Why I'm never signing up for Amazon Prime, 2017-Jul-11 by Vlad Savov
I don’t expect anyone to follow or join me in resisting Amazon’s primal pull toward Prime. You’ve got your own priorities in life and, in all honesty, nobody’s going to fix global injustice by disregarding Prime Day and taking a nice walk outside instead. But it makes me feel good to do exactly that, and so — in the ultimate expression of consumer choice — I’m opting not to consume Amazon’s enchanting deals elixir.
(By the way, this article has one of the best comment threads I've ever seen.)