I am not non-religious; I am anti-religious. I believe that the absence of religion will bring more peace and stability to the world. In any case, religion, as a means to ensure compliance with “good” has lots its significance, with “legal” rules defining governance, in general.
I have seen several “inter-caste” couples, which is still pretty unacceptable for the majority of India. But, personally, I had not seen couples that have had inter-religious weddings.
But, recently, I got in touch with a friend, who married someone in a different religion. That is even one step farther than “inter-caste.” It seems they did have their religious differences, which led to arguments. But, at the end, she said, “I thought, what is more important: the person or our religions?” And since then, she feels it has been fine.
But, the above approach is hard, very hard. My friend, herself said that it was very hard. I say it is hard, because, I have seen or heard of parents breaking off relations with their child due to inter-caste, inter-religion marriages. I have also heard of parents breaking off relations just because their catholic daughter decided to marry a protestant guy! Essentially, religious differences and intolerance can sever even a parent-child relation!
So, in some way, I appreciate the approach this couple took! I foresee a future without religion, but if it is even full of people, who inherently believe that people are more important than religion, it will still be fine.
… I hope.