For people who don't get married, the planning of their old age may be different, because they have no spouse and no family, and they need to consider how to spend their old age alone.

Here are some possible plans for later life:

1. Social activities: In old age, social activities are very important for maintaining physical and mental health. You can join some social groups, make friends and participate in various activities, such as travel, cultural activities, fitness and so on.

2. Self-enrichment: You can learn new skills in your later years, such as reading, writing and painting. To enhance their sense of fulfillment and satisfaction.

3. Health care: You need to pay more attention to physical health care and health care in your later years. You can keep healthy by exercising, keeping good eating and sleeping habits, and having regular physical examinations.

4. Volunteer service: You can participate in volunteer service activities, make contributions to society, and increase your sense of self-worth and social interaction.

5. Travel and vacation: You can choose to travel and vacation to start a free life in your later years and feel different cultures and natural scenery.

In short, unmarried people can live a full and meaningful old age in many ways, and maintain physical and mental health, satisfaction and happiness.