hard to disprove that which doesn't exist.
maybe the thing THEY are targeting is your errant thinking and reasoning - which does happen to exist.
i might be wrong tho.
ask them the next time someone does it.
And my response is that how miserable is your existance that you waste your time on this especially with people who wouldn't care nore be impacted if you died right now.
I would think someone who doesn't believe in God would also acknowledging and understand that they are also just as irrelevant and maybe even useless in the grand scheme of reality thus their arrogance to police thought is comedic (because as mentioned if they died a brutal death now it wouldn't even matter in the grand scheme of life).