I think you're likely to get a poor reception if you pretend to join a religion you don't believe in solely to use it as a social club.
Pagan atheism is well known thing and is certainly accepted within some parts (I'll admit not all parts) of the community. Check out some of the answers here:
https://www.quora.com/Is-it-possible-to-be-an-atheist-pagan
Nothing better in my opinion than an evening of polite chitchat with ultra right wing nationalists.
Your right, atheism is boring. Sod reading Bertrand Russell and watching Peter and Christopher Youtube vids.
Buying a motorbike was a great way of meeting older gentlemen dressed in leather. But with this pastime you get to meet skin heads and large Germanic folk and wear black. Plus you can wear pewter Celtic like jewellery, look hard as nails but still be frighted of needles and cry at the dentists. What's not to like.
Hopefully I won't be hanging around with that type of person. There are perfectly nice Heathens who are not ultra right wing nationalists and who are not racist.