I know I'm a bit late joining in and I hope it's alright, but I just I'd share a few thoughts about religious differences amongst Christians, espcially with regards to Christmas and "fitting in".

I find that even amongst Christians there are a wide variety of beliefs regarding Christmas. Some don't celebrate it at all as the date is all wrong (I can't remember exactly but I think Jesus was most likely to have been born in June? Feel free to correct me) and it is related to pre-Christian pagan celebrations. Others think that because it did eventually become a Christian holiday it should be celebrated to excess and even get offended when people of other religions don't do it, like when shops or restaurants open on Christmas day. DH and I go for a middle line, we celebrate with family and thank God for sending His Son (even if the date is wrong) but we won't be teaching our children about Santa Claus as we don't believe he is a real part of Christmas, especially as he is used to promote greed in children. It's not surprising then that there are wide differences in other religions like Muslims regarding the celebration of Christmas.

Personally we haven't found it too bad although my ILs come from a background that considered Christmas evil and refused to acknowledge it. Funnily enough our arguments now are regarding which family gets us on Christmas day and which one has to make do with some other day. I find I tend to dig my heels in a bit when it comes to that and let my family have first choice of days as Christmas has always been more meaningful to us rather than just be an excuse for a family meal like it is with the ILs.

Funny, but it so true about those people who believe in nothing. I have friends of many different religions but I've only ever had arguments about religion with those who called themselves either atheists or agnostics.