Nisses

well, Sins are inherently tied to religion.

I agree for people that don't follow religion, these things should still be guidelines, as in, "problematic behaviour" to steer clear of.

I wouldn't take out any really.
perhaps adjust pride's definition for non-religious folk.

It's interesting that all sins really apply to human interaction, never to a person himself. It's all about keeping a good name for yourself in the here and now. (who would wanna be friends with an overtly proud glutonnous bastard?)

Most of what I read so far, is either
a. a rewording (religious intolerance -> pride to the point where you have the right religion, the others are wrong and will suffer for it -> wrath)
b. lack of experience (driving)
c. actions instead of behaviour (lying)

actions, that's what the commandments are for...

If I had to add one though, I'd go for unreliability, which I guess leans pretty close to irresponsability.

Edit:
Disrespect or lack of respect could be added, but it's so broad as to encompass other sins.

__________________
Moderation should be moderately moderated.