Hi Wobble,
I served in another country for several years while pioneering. I returned to the States just a few years ago. I was surprised at the number of missionaries from other religions that I met while preaching abroad. And like Ynot said, they not only preached but also ran charitable organizations that greatly benefited the locals.
When I recommended that we (the JWs) did something similar, I was told by Gilead missionaries that we were there to preach and not provide charity.
That were several other comments that they made that caused me to seriously question the whole religion. Unfortunately most witnesses are not exposed enough to the world around them to know they are not the only ones that preach worldwide, don't celebrate christmas and preach abstinence till marriage.