From my experience debate and discussion is a waste of time period.
I keep my interactions with people (theist or atheist) simple:
1) Stick to the facts. (Things that can be observationally or historically proven.)
2) Be prepared to defend self and enforce policy with force if necessary.
3) Keep interactions brief, but no less than necessary or desirable.
4) Control the interaction. It is your right and responsibility to walk away in public or leave their home or business whenever you want to, and it is your right and responsibility to make them leave your home whenever you want to.
I keep my interactions with people (theist or atheist) simple:
1) Stick to the facts. (Things that can be observationally or historically proven.)
2) Be prepared to defend self and enforce policy with force if necessary.
3) Keep interactions brief, but no less than necessary or desirable.
4) Control the interaction. It is your right and responsibility to walk away in public or leave their home or business whenever you want to, and it is your right and responsibility to make them leave your home whenever you want to.