It hasn’t affected me; I’m between TV sets.
I live in Toronto, which is going through its own similar NTSC -> ATSC transition, just a couple of years later. Unusually for Canada, though, we have a wide variety of OTA HD channels.
Thanks to a spell of brokeness, I gave up cable about five years ago. Even then I hadn’t had an actual ‘TV set’ for some years; I just plugged the analogue output from a VCR into my computer monitor. The VCR’s cable-ready tuner was plugged into analogue basic cable.
Giving up the cable changed surprisingly-little. If I really want to watch something, I watch it on the web. Sites like Hulu are closed to Canadians unless we use more Internet subterfuge than I can be bothered to deal with, but CTV, the CBC, and other channels make a surprising amount available.
I suspose I’ll get a tuner stick for my computer at some point. Eventually I might get a nice flatscreen, but that will probably be driven more by desire to watch HD movies (translation: I can’t get the right adaptor to watch it on my iMac) than by desire to watch broadcasts. Unless some field of study requires that I watch a channel available only on cable or satellite.