Should there be an Athiest "church"?

Recently in my city an advertisement went up inside a few busses reading ”There’s probably no God now stop worrying and enjoy your life.” I think it’s great. It’s simple, short, and not completely denying God or religion. They even used a capital “G” for God to be respectful. but of course the religious types are up in arms over it. I’m atheist and many of my friends are christians, so we have some pretty long arguments on the subject. It usually boils down to them explaining that the ad is attacking their religion and it’s offensive to them. Even though most religions, especially christianity focus on teaching their followers to denounce all other religions and that not believing in God results in severe punishment. New Testament – Mark 16:16 “He that believeth not, shall be damned”.

Instead of advertisements, religions force themselves upon us/children in churches and schools. Before you say that it’s our decision on whether or not we choose to go to church, the fact that they have full buildings of supporters demands recognition whereas an ad can simply be ignored.

Basically I’m asking if it you guys think people today are tolerant enough to let us atheists have a place to go and discuss world issues and how to deal with them or would that just end in protesting and probably violence?