[Billthedrill]

Well, I dunno. I mean, you can take the existential approach, and posit that there may not be a "why" involved, that being logged in is an indissoluble part of your nature and isn't really separable from your very being. That's what I tell my friends when they say "BtD, why are you such a jerk?"

[m1911]

Jeez, and I thought I came up with that one.

[Brookhaven]

you can take the existential approach,

I log in, therefore I am.