Well, I've done the same damage to my own circle of friends. Funny though, it's never really been much of an issue with online shopping here (Denmark) since the banks were quite fast with a unified solution that just works, and to date has had no incidents from a security standpoint (same goes for chip+PIN, this was introduced a decade ago, and I've yet to hear about any leaked CCs around here).
But the damage lingers long after you've abandoned the gripe yourself, I can relate to that. My sister still calls me up to have the "which AV should I chose" discussion, even though I've told her I don't use AV anymore - I use sensible online conduct instead. She is still wary of Steam because I've raved, at length, about the horrors of their draconian DRM. I use Steam extensively now. The thing is though, that as much as we as nerds have griped to friends and relatives, there are probably an order of magnitude more people who have not heard it, don't care about it, or have simply forgotten about it again.
as backwards as Microsoft has gone with their UI, security wise I'd say you are no worse off than swiping your card at any POS terminal now
LOL. That's not really an endorsement though. Every American with a CC has had it leaked at least 3 times over (statistically), just within the preceding year alone. But I get your point.