I've been primarily watching OTA digital when I watch TV (ABC, CBS, NBC, FOX, PBS, ION). I find myself watching about the same amount of TV as before. I do toss $20/mo to PBS because that's the channel(s) I watch the most and that's how they support themselves. I have also signed up to Netflix (streaming only) and Hulu and I have been a member of Amazon prime since 2005, so I don't really count paying for that since I would have it anyway. So, I pay about $36/mo for my programming (if I wanted to cut-off PBS it would only be $16/mo). Yes, you suffer when it comes to current season cable shows and sports, but I can live with that, there's plenty of good, year-old programming out there to keep you occupied. If I have to wait to see the 5th season of Breaking Bad, it's not a problem, there's plenty else to watch in the meantime. And the only sports that suffer (for me) are college basketball and, to a lesser extent, college and pro football. I miss ESPN but I'm getting by just fine without it and I never had NFL Sunday Ticket anyway.
I have 2 TVs: The living room TV has OTA, PS3 (blu-ray, dvd, netflix, hulu, amazon) and a Popcorn Hour for my media files (AVI/MP4/MKV/etc). In the bedroom I have OTA and a Roku (netflix, hulu, amazon). Again, aside from maybe the Roku, these are devices that I would own even if I still had cable/sat.
I don't ever see myself going back and eventually there won't be anything to go back to. Someday (soon hopefully) all channels will be streamed and you will be able to pay for them individually or at least a la carte through a streaming service of some sort. Of course, I plan on moving out into the sticks next time I uproot myself, so I'll just have to live with OTA and recordings. Dial-up/Cellular Internet access will be potentially slow/non-existent and/or expensive -- I probably will not be able to stream video. How will I survive eh? Actually, I like my odds.