Except if you want a postion with a company filling a Navy contract. You need that certification as they won't look at you without it.:frown:
The bolded part above speaks volumes. I work in this industry that Dave speaks of, and I can't tell you how many MCSE's I've chewed up and spit out these past decades. I've long ago let my MCSE expire (back in 1997) and I'd never wanted to recertify. Reason? MCSE certification is almost worthless. And this is the case for just about any certification that involves merely passing a paper or electronic test, but no practical lab or oral board to go in front of and get drilled (like, say, a Cisco CCIE).
I personally think anyone that has a proven background, knowledge, and history -- and relates it well (i.e. folks have spoken and/or given feedback about the ease by which this person performs what we in my industry term as "knowledge transfer") -- qualifies as an instructor.
I personally won't call myself an instructor. But I revel in my ability to perform knowledge transfer, because I've been doing it for so long, that it's second nature, and I feel I can seamlessly bridge the divide between the most complex things to understand, and the common layperson.
-Sean