2writeabout, that's one of the smartest and most astute things I've read in a while, and you raise a critical point. I agree, I feel too many people get caught up in the "hierarchical" aspects of the church-- there are those who do this full-time, sometimes to the point of being "rock stars" or at least respected figures (generally with good reason), but sometimes others doing valuable work, I find, will guilt themselves about supposedly not contributing to the same degree. As you say, all of us contribute to the spread of the Gospel in our own ways.
We all have to live in this world, make a living, hold a job, do various things that, depending on our background, may impede (at least temporarily) our capacity to minister. But we should not sell ourselves short, we all have to contribute in our own ways, to whatever extent we can. In fact, IMHO the best sign of one being "called" is if a person is busy juggling all these things, yet still feels moved to minister.
In line with some other threads here, a number of my own fellow co-congregationalists are now doing ministry in Europe-- spread out in places from Germany (really the center of operations), through Greece, Italy, the Netherlands, Finland, Belgium, Austria, even Luxembourg in one case, depending on language and other skills. Most of them had advanced careers before, working as engineers, researchers, businesspeople, in one case an ex-professor, a physician-- yet they've actually moved to the European countries above and are raising their families there. To be sure, there are some potential professional and business opportunities, but the point is, all of them decided to not take the easy road-- they've taken a much more challenging one of living in a different country, speaking a different language, raising their children in a new culture, and striking out, because they decided they wanted to help bring the Gospel to other lands. The urge was so strong for them that they've re-oriented their lives around it-- albeit also trying to adjust as best they can professionally, as well. *That* is an indication of a true calling!