Sub-toot:
Not knowing something is not something one should be proud of. This applies equally to things like maths, physics or regexes.
If you're a programmer, knowing basic regexp should be assumed. Don't be like the people who go "I don't know how to estimate 10% of some number. ha ha, maths is hard"
Clarification: I'm not saying it's wrong to not know something. I'm saying that don't be proud of the fact that you refuse to learn it.
@loke Does this fall under the 'vi' vs 'emacs' category? As in not knowing because you are firmly in a certain "camp". Anyway, in general I think learning is fun, so agree with your post.