A religious attachment to vim? No friggin way. No editor has ever caused one of my projects to come in late (or early). The factors that affect real projects are so far removed from the software one uses to edit code that it is incredible some people evangelize something like vim to such an extent.
The other really funny thing is to see articles and blog posts describing how to add trees, tabs and all manner of other things to vim and how this makes it even cooler. Really funny.