it's just that in places such as japan where no religion is precticed, life is far more peaceful. their lifestyles don't consist of silly little fueds to do with religions. as for normality, it depends on the family, many families function without religions. culture doesn't mean religion and you can be cultural but not necessarily religious, i understand that culture is very much intertwined with religion.
living in an multicultural society means you have to respect each religion however, that isn't the case for everyone leading various terrorists attack which mainly tend to stem from clashes in religions. so would avoiding religions be just one of the ways for people to view others more equally.
HOW CAN YOU SAY THERE IS NO RELIGION IN JAPAN ?
READ GEOGRAPHY IN HIGH SCHOOL ??