The answer to this question lies in individual experiences. According to some couples, the years right after they get married can be the most challenging because of the change that has taken place in their lives and all of the new responsibilities that come with marriage. Other couples report that it can be really tough starting out on their own and then adding another person into the mix. So, while there is no definitive answer as to which year of marriage is hardest, it is certainly understandable why different couples might have different opinions on this matter.