I've met a couple of missionaries here that were doing things to help people (funded by their churches back in the states). Don't paint all missionaries with the same brush, it's not always just about evangelism and taking donations. Some actually do walk the walk and want to help their fellow man. Like that other guy would have done, whats his name? Oh yeah, Jesus.
Thais are very tolerant of other religions. They seem to feel confident enough in their own belief in Buddhism as to not feel threatened by any other system of thought. Like Jack pointed out, missionaries have been coming here for five hundred years and the country is still 94% Buddhist, 5% Muslim and 1% other (Christianity being less than half of one percent I would guess).
If the Thais don't mind them here, why should we?
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