Sometimes people will try and claim Atheism is a religion during a debate in an attempt to discredit it or move the burden of proof. It also comes of as “See, you’re no better than me!” which is not very flattering to your own cause. Besides the fact that Atheism is as much a religion as “off” is a TV channel, this line of reasoning has some implications that the person using it would not enjoy.
IF Atheism was a religion, then it would be subject to all the same privileges Christianity enjoys. Atheists could build tax-exempt houses of un-worship. All our Atheism related transactions would be tax-exempt. Atheists could get off work and out of school for Atheist holidays. If Atheism was a religion, we could able to demand that people stop attacking out tenants, we could put non-bibles in every hotel room, we’d have politicians begging us and pandering to us for our votes, we’d have statues erected to Atheism, we could even have an un-sabbath. As a religion we could demand unconditional respect be given to us based on our lack of faith. Basically, if Atheism was a religion we would be entitled to every kickback other religions get. The person saying “Well you’re a religion too!” never takes this into account. They just want us to have all the negative stuff that goes with being a religion, without any of the societal privileges.