First of all, social development is driven by many factors, including economy, culture, science and technology, education, etc. Marriage is only one of the factors, and although it can promote family and social stability to a certain extent, it is not a necessary condition for promoting social development.
Secondly, with the development of society and the change of people's concepts, more and more people have begun to pay attention to personal freedom and independence, and choose not to marry or marry later. These people can realize their social value in other ways, such as volunteering, dedicating themselves to careers, pursuing personal interests, etc. These activities can likewise contribute to the development and progress of society.
Third, getting married does not mean that a person's social contribution will necessarily be greater than that of someone who does not marry. In fact, many people who do not marry have made outstanding contributions in their fields, such as some outstanding scientists, artists, writers, etc. These people chose not to get married, but their achievements have had a profound impact on society.
Finally, marriage is not a stage that everyone has to go through. Everyone has their own lifestyle and values, and decisions need to be made according to their own circumstances and wishes regarding issues such as whether and when to get married. If a person chooses not to get married, it does not mean that they have no contribution or value to society. Instead, they can contribute to society by realizing their worth in other ways.
To sum up, not getting married does not affect the development of society. Everyone has their own choices and lifestyles, and we should respect and understand their decisions while encouraging them to reach their potential and make a positive contribution to society.