[varunsrin]

To be honest, its like a matter of OCD to me - for instance, I like keeping my desktop completely free of icons (even though I don't need to).

In a similar way, I like only looking at the code that's relevant - if the method I'm working on is larger than a single screen (which happens with comments and such included) I like collapsing parts I don't care about. I don't, strictly speaking, need to in order to work effectively but I like to - as you said, more of a religious argument than a quantifiable one.