Marriage is a personal decision that depends on various factors such as individual choices, cultural norms, and personal circumstances. It is up to your son and his future partner to decide when they want to get married.
Similarly, I cannot predict whether someone will be employed or choose to be a housewife. That decision depends on the individual's education, career aspirations, personal preferences, and family choices. People have diverse paths and make different choices based on their unique circumstances and desires.
As a parent, the best thing you can do is support your son in his journey, encourage him to pursue his interests and passions, and provide guidance as he navigates through life's choices. It's important to respect his autonomy and allow him to make decisions that align with his values and goals.