Who has proposed to ban them?
I believe they were banned in Italy. I think some people here would want them banned, based on some of the posts. To be more clear, on the basis of this thread, many people would prefer not to see these ads.
"There's probably no god."
It's clear that such a passive sentence will certainly cause some people to neither relax nor enjoy their own life - particularly when it could interfere with them speaking on behalf of a god (
hint: many hard-core believers like to play god).
I honestly could not care less if a person is religious or believes in god. To me it's a personal issue, and that's all. But that has not stopped some religious people from hectoring me and many others to believe in what they want me to believe, or preaching to me without invitation, or telling me that my mortal soul will toast in hell courtesy of a supposedly loving god, etc. All too often, I can turn on the news and hear about people killing each other in large numbers on the basis of differing religious views, or on the basis of what god is alleged to have said to them a long time ago, or because god is on their side, or because they are chosen by god and so on.
No, there probably is no god(s). That, or he/she/them is an underachiever. Either a better PR campaign is required, or some irrefutable verifiable evidence is needed. I'd be more interested in the latter.
As for my beliefs (should you even be remotely interested), I think the cosmos/universe/megaverse/whateverthefuckyouwannacallit (the really big outdoors) is infinite. Anything is possible in infinity, so we are all something that just happens from time to time.