Christians and Non-christians?

Just a bit of food for thought... should we really be using the term "non-" to refer to those who aren't christians? i mean, the term "non-" sounds like a negative term, like it's bad, negative, not included, almost like it's refering to christianity being the good whereas all the other religion are bad. Same goes to the terms of muslim and non-muslim... i mean, it sorts of put a sense of discrimination on everybody... so, it all boils down to, do we or should we should the term "non-"?