I usually simply say "I agree to disagree" and leave it at that. I'm not out to convince anyone of anything. Likewise, I'm generally not really interested in what people have to say on it, on either side of the fence. I've found that finding my own path in life has the best results, and the rest can find theirs' as well as far as I'm concerned. That may be a simplistic and isolated approach, but that's what works for me.
As for science and religion, I leave that to people that care.
