Because it was a response in general and not an accusation, in any way. You need to turn down that uber-sensitivity meter. If I meant it as an accusation/claim, I'd tell you up front
why throw out non related opinion-oids in a debate that has no religious undertones?
That's not how this country was founded, nor is it a Christian thing to do, in ordering someone to take care of someone else.
But since you did, helping one another is an extremely Christian thing to do, in fact it is the essence of Christianity:
"What commandment is the foremost of all?" Jesus answered, "The foremost is, 'Hear, O Israel! The Lord our God is one Lord; and you shall love the Lord your God with all your heart, and with all your soul, and with all your mind, and with all your strength.' "The second is this, 'You shall love your neighbor as yourself.' There is no other commandment greater than these." (NAS, Mark 12:28-31)