Stupid things religious people say

[Modern Atheism]

'They're only demons' -- Newark exorcist shares insights at Bridgwater talk

One of the arguments I make sometimes is "where did all the demons go?". Clearly the bible portrays them as something that can happen sometime, in fact, it seems kind of common in the first century. So why did it almost stop happening in modern times? They could say that Jesus resurrection defeated the demons, but Jesus tells the disciples to go expell demons in his name after he is gone, so this doesn't work.