I pay ~100/month for cable. I've had a Netflix subscription for ~6 months. Since subscribing to Netflix, my girlfriend and I have watched less than 20 hours of television via cable. We maintain a cable subscription for pretty much the same reason people rationalize a landline phone (just in case).

Netflix can raise their prices about 10x before I'd even consider not renewing my subscription.

"But comparing Netflix to Cable is a bullshit comparison, the content on Netflix is way less" you might say. In theory, you are right. The content available via Instant Watch is way limited; and it has less newer content.

All I know is that since we've started using Netflix, I've stopped buying DVD's (I used to order 15-20 a week from Amazon), I've stopped watching the DVD's I already own (I have about 1000 sitting in giant plastic tubs in the closet that I never dig through), and I've stopped watching regular television.