DH is Christian, I am Hindu. Different religions, different race, different culture. We both practice whatever we want to practice, and we respect each other's beliefs. Kids are exposed to both religions and we lean more towards celebrating the humanitarian, spiritual, ecological aspects of religion.
Being in this country, it is would be hard not to participate in the secular aspects of Christmas. And I love the holiday season for this. The tree, presents, lights, holiday parties, dinner with family etc...and we also attend the mass with the rest of the family. I love this season and I feel the same spirituality, reverence and peace in a church as I feel in a temple.
DH participates in all rituals and secular aspects of our major religious observances...Diwali, Holi, Rakhi, Janmashtami, Shivratri, Navratri etc. He loves going to the temples too (but I think a big reason for him is the temple food).