A comment of a Muslim woman on the Sikh faith highlighted ignorance of the Sikh faith by Sikhs themselves.
The woman understood the clear difference between a place of worship being open to all and how religious ceremonies of each religion should be respected and abide by the guidelines and codes of conduct.
Sikh Gurus showed a lifestyle which one can follow to meet God. It is better to get married to someone with whom you share similar beliefs than to marry out of religion. Sikhism does not state that marrying out of religion is wrong or a sin. However, the marriage has a far better chance of success if the couple belongs to the same religion. Since beliefs can differ and can cause conflicts, it is better to be with someone with the same belief system.
The more a married couple has in common, the more likely their marriage will be successful. When a couple disagrees on basic core values and beliefs, it can lead to additional stress, conflicts, and disappointment. The issue of how kids are raised can be especially problematic. The decision regarding which teaching and beliefs should the children be taught can become difficult to deal with.
Sikhism is a modern religion, and instructs that all humans are created equal. In no way Sikhism states that one should not marry another human because they are less of human or inferior. All humans are equal but people from different religions have different beliefs. The difference in beliefs system and lifestyle is the main reason to marry within the religion.
A Sikh can get married out of the religion if they choose to, however they cannot do so in the Gurdwara Sahib since Anand Karaj (Sikh Marriage Ceremony) is very spiritual, religious and a promise with God.
In order to live a peaceful lifestyle to accomplish the purpose of the human life, one should get married to a Sikh so that the couple can together carry on their journey on the path showed by Sikh Gurus.