Hats off to you for not being offended. While I agree it was probably a well-intentioned comment, it showed a shocking degree of ignorance. Substitute "non-christian" with black, jew, gay, man, woman, etc... I believe it is a good illustration of the pervasive and fundamental belief held by so many that different is bad. It is also a good illustration of how, in my opinion, organized religion is at its core a recruitment engine, not unlike Mary Kay, Amway or any ponzi scheme. My mom used to often repeat the old saying - the road to hell is paved with good intentions.

I've found that Christians mistakenly think that people who don't believe in their god also have no regard for the ten commandments and therefore believe they have no need to keep them.

Christians think they have a monopoly on good deeds and are more concerned with how good their religion looks rather than the deeds themselves.