Marriage is about life-long partnership based on mutual love, respect and shared beliefs and practices.
That is why it is important for the partners in marriage to have common shared beliefs, practices and feasts and celebrations which create bonding and cement their relations.
My experience as a family counselor spanning over four decades teaches me that it is only marriages built on such a foundation can endure and last. Marriages lacking such a foundation is bound to fail and break up. So, if you are wise, you should only consider marrying a person with the same shared beliefs, values, and spiritual practices.
We make the mistake of confusing idealism with real life; married people are bound to face the many challenges and pressures of real life; without a shared belief system and values they would quickly fail and fall apart.

It is best, therefore, not to rush to navigate the rough waters without proper tools or preparations.