[rimunroe]

Yes. Things should not be customized because not everything is customized. Personally, when I drive a car I never adjust the seat or mirror positions. I also never store anyone's contact info in my phone because then I wouldn't know what to do if I lost my phone.

Seriously though, having aliases, scripts, or complex programs to help doesn't cripple you unless those things themselves force you into a state you are unable to reach out of.

I've never found myself on a new machine feeling helpless because I didn't have a shell with all the customizations I'm used to; I only felt some annoyance. Said annoyance was far less than the cumulative annoyance I felt before making those changes--and the amount they have saved me since.