I have changed from the 5-out to the 3-out plan, for a couple of reasons.
#1 I have other things to do. It's summer where I live. Social opportunities abound. I haven't been able to keep up with my viewing. If you can't watch 'em, don't rent 'em! Last month, I watched only 12, and so far this month, only 7. The 5-out plan requires I watch a minimum of 10 per month to break even with the brick-and-mortar stores, IMHO.
#2 I have other things to do, two. There's an historic theatre here in Greensboro that's begun an Orson Welles series AND an independent film series, so I'm there twice a week. And there are films opening almost every week that I want to see in the first-run theatres. (Spiderman, anyone?). I haven't even seen Harry's 3rd yet!