It is a mitzvah to get married in order to have children and raise a
family. One should strive to have many children, since each additional
child is like building a world. Both men and women should always strive
to be married (Rambam, Hilchos Ishus 15a:16).
A person should pray for help in finding the right shidduch. Parents
should also pray for their children (Berachos 8a).
"It is not good for a person to be alone." (Bereishis 2:18)
The third mitzvah that a person will be asked upon entry into the World to
Come is "Have you been involved in the mitzvah to procreate?" (Shabbos