I guess I see it in the same way as healthy eating, or something. I really bloody like cookies. They're super tasty. If I end up with pack of freshly baked cookies they're gone in a few hours. So why give myself that temptation?
What I actually want is the ability to do it. I think it's good for my mental health to have a treat every now and then, but not have it take over my life. So basically, it should be difficult, but not too difficult.
In a similar vein, downloading a YouTube video before watching it gives me that window of self control before there's more exciting stuff battering me in the face to continue.
I've been using computers and Internet since childhood - I'm not a luddite by any means. But I think it's far too easy nowadays to get caught in bad behaviour patterns because of the instantaneous nature. It takes active effort to digest deep topics.
I don't think I'm a pious enough person to be self righteous! Maybe I'd feel different if I were more financially secure and had more time for pure leisure? I don't know. :)