I've been mulling this around for a few weeks now. (Well, for years, actually, but this is the most recent incident that caused the mulling.)
We were talking about evangelism in adult education earlier this summer. There was some discussion as to whether it was the right thing or the wrong thing to do. Our organist and music director, someone for whom I have the greatest respect, pointed out that the book of Acts would be pretty boring without evangelism. True. In fact, it would be pretty much non-existent without evangelism.
But we live in a different world today. Setting aside the issue of missionaries (who have done both great good and great harm, depending upon the era, locale, and denomination), I'm not sure we have any business trying to convert people. If they choose to come to Christianity, we should welcome them. But to tell anyone that Christianity is the one true way I don't believe is right.
To me, doing God's will in the world is about love, healing, compassion, and social justice. What's it's not about is conversion.