More than a couple? Netflix, Amazon Prime and Hulu Plus are less than $30 a month combined. Show me a cable deal that even comes close to that while offering equivalent content and services.
Cable is severely limited. On-demand is a limited upgrade, whereas with streaming everything I get is on-demand by default. With cable I would have to watch when a show airs, go through the trouble of DVRing a show, or wait for reruns to see an old episode, enduring lengthy and irrelevant advertisements the whole time. Subscription to a streaming service usually provides the entire backlog for a given show, or at least the most recent few episodes, with limited or zero advertising; plus I can wait to enjoy the latest episode if watching it when it airs isn't convenient. Likewise I can access my streaming services from anywhere with a decently fast internet connection, even from my phone, whereas with cable I have to be at home on my couch to "enjoy" its comparatively tepid experience.
The only downside to streaming for me is that I have to wait for stuff to pop-up online, but that's becoming less of a problem as time goes on. I also get tons of additional quality content to keep me occupied in the meantime, so I'm happy to wait. Hulu Plus alone gets me every season of South Park, family guy, as well as the latest Modern Family, Agents of SHIELD, and Arrow; Netflix gets me dozens of TV series and movies that I enjoy; Amazon Prime gets me Suits, The Sopranos and a suite of movies complementary to Netflix.
I had basic cable in college, about 50 channels provided as part of living in the dorms. It wasn't an option, everyone got it. I still barely ever watched it outside of major sporting events and live news. There was hardly ever anything good on TV, much less so at a convenient time, and my laptop's hard drive was limited for DVRing purposes. So I saved up money to pay for Netflix streaming which I spent infinitely more time with (started with Breaking Bad). So for me the experience was such that I'd rather pay for Netflix then get basic cable for free.