Sorry, rushing if some things are left out, don't have many breaks. I'm not an advocate of religion but I really don't care what people believe/follow in, I do, however, care about what they do with those beliefs.
I think it's better to just argue that you don't believe in religion than throw science into it everytime.
Science is neutral, while religion has value judgements attached to it, ok, but then when we start to say religion is bad because it makes poeple do bad things on false premises, then science is implicated in a lot of nasty things as well. Here's a series of thoughts I think are interesting to think about when you compare the virtues of science to the ills of religion : 1st, Science is right and has given justification to bad things; 2nd, Religion should be ignored because it propagates ignorance, part of that ignorance leads to bad things; 3rd, Science is not right because it has supplied reason for bad things just like religion; 4th, Science is the means, but so what? The ends only count - which in this case religion is absolved of it's burden.