Planting seeds works wonders.
So does emperical evidence.
Rather that trying to tell some one that they are wrong and stupid for thinking so, it is IMHO and experience that I will tell them What I understand to be true, and back it up with some published notations, or papers, or many other ways.
Then let them decide for themselves. sometimes just the right seed can grow a giant tree.

Attacking them only makes you the same as they are, and where then is the progress in that?

I don't offer one bowel movement for what others believe or don't. Live and let live.

If religious people can't change our minds, then we shouldn't expect to change theirs. It's annoying when a religious person gets all up in my business. I wouldn't want to do that to others.

Live and let live.

Proselytizing and trying to convert is the least of the issues I have with theists as it is just an annoyance and can be stopped fairly easily. However, the day to day force feeding of religion in the lives of others via governmental rules and laws is another issue and must be resisted at all costs.
VOTE in November.

I feel that to each their own. I leave them believe what they want, but if they start on me, I let loose. Defensive yes, but when confronted with factual questions, most will walk away.

Trying to change people's beliefs is bound to be a thankless task. Better to give them the tools and information to make better choices on their own.

well, that would depend on the circumstances, my mood, how much of the other person's stance involved interfering with MY life, the venue and possibly the weather!

g