Once I went for four days, and this was only because I was staying at my grandmother's house for my grandfather's funeral. The moment my family started travelling back and we split up into hotel rooms along the way, that's when I released my tension. Maybe it was my imagination, but my release seemed to be huge! I don't recall it being very pleasurable, per se, because it was a quick wank... But it was definitely satisfying.
Even at college, I've managed to jack off at least every other day, sometimes (but not usually) "with" my roommate. (I say this because nothing ever happened between us, we were just pretty much on our own beds dealing with ourselves.)
Now that I'm back home, I manage to masturbate once or twice a day. I think I'll try to do that "magic" three days or at least every other day to make the process more meaningful and -hopefully- more pleasurable.
I'm not one for edging when it's not for sex, but I'll see what happens if I have more time (and patience).