My gf's family, and a lot of her friends are Christians, and when ever something's happening, I hear this phrase a lot. Once I had shared something, and someone said they'd be "praying for me." I don't know how to respond to this. They way I see it, prayer is doing nothing while feeling nice about it, and I want to share this, but I don't want to be rude and say something like "prayer is dumb" or "don't pray for me".
How does one respond to "I'm praying for you"?