If you became an atheist recently (and by recently it can range from 1 month to 2 years) you'll be having a species of 'syndrome' that happens frequently because letting go something you have always believed is though and hard to do. When I quit Christianity, I still was a kind of deist with some beliefs in a creator, it was merely wishful thinking. With time you'll start to think about that question less times until you quit giving a shit about it.
What if Christians are right? They could be. As I usually say, atheism and lack of evidence don't prove any religion wrong. However they make theism/religion highly unlikely, the probability of christians (and by the way, I don't know why you only mention christians, you forgot the other big four religion worldwide) being right is a lot lower than the one of atheists being right (and we are).
It's christians who should be thinking 'what if atheists are right?'
What if Christians are right? They could be. As I usually say, atheism and lack of evidence don't prove any religion wrong. However they make theism/religion highly unlikely, the probability of christians (and by the way, I don't know why you only mention christians, you forgot the other big four religion worldwide) being right is a lot lower than the one of atheists being right (and we are).
It's christians who should be thinking 'what if atheists are right?'
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you
