Dottie B, and good and thoughtful question... and it inspired many good answers. It is a pleasure to see some new voices and opinions on Kiva Friends!
As for me... before we moved into our motorhome and began traveling, I had read in our local newspaper about local, neighborhood microfinance lending groups that met once a month to select borowers and make a group loan. This was my first exposure to microfinance. I am not sure of the mechanics of these transactions, but I am certain it was not as easy as lending through Kiva.
Since we no longer are part of a local community, this was not an option for us, though I was very interested in microfinance lending. When I saw the Frontline story on Kiva, I zipped immediately to the (crashed) website.
Perhaps Kiva is not *necessary* for the borrowers (though the many excellent posts point out it's usefulness), but it is necessary for ME.

Safe travels,
Laurie