I was petrified of coming out at work (hell, I was petrified of coming out at all, which is why I waited until I was 33 - oddly enough I'm 29 now

), but I should have realized it was no big deal. I work in health care, which is a predominantly female field (outside of physicians) and a huge percentage of the men are gay. At my first office Christmas party after coming out I ended up at the "gay table" with 6 different gay colleagues and 4 of their partners (2 of the guys were single). Although a few of those folks have left the company, we still have at least 7 openly gay employees (out of a total of 165) - right in the 5% range. Although we have a large number of very religious people at the office, and a lot of them belong to church's that are unaccepting of gay people, to say the least, it is not an issue - I don't lecture them about their religion and they don't lecture me about my sexuality.
Just the other day a colleague who has known me since I started here (6 1/2 years ago) remarked at how happy she was that I had come out - and this is one of those very religious types (albeit with a good friend who passed from AIDS a few years ago). She realized how it had improved my life and my outlook - how I was now happy a lot of the time instead of being miserable as I'd seemed before - it was a very touching moment.