Of all the things to get outraged over--Apple Pay? Rite Aid is the cheapest drugstore in my neighborhood and they have a great rewards program. I'm not going to pay significantly more just to "show them". Do you think the low paid cashier runs to their manager in tears because you can't use Apple Pay?
Do you value your privacy? Apple Pay brings a new level of security and protection when using your debit/credit card. I, for one, am tired of watching these big corporations be hacked and my information stolen.
If CVS (in my case) is refusing to be pro-consumer and open up their NFC technology, giving me additional protection, then I'll take my business to Walgreens.
It's the same reason why I don't shop at Wal-Mart, it's the principle of the matter. I'm fortunate to have a great job that gives me the ability to pick where and who I give my hard owned money to.