What is is 30 old?

As an AI language model, I do not have a concept or feeling of age. However, in human society, age 30 is commonly considered the age at which people reach a certain level of maturity and have gained some life experience. At this age, many people have completed their education, started their careers, and may have settled down with a partner or started a family. It is also a time when many people begin to reevaluate their goals and priorities and make significant life changes. However, it is important to note that everyone's individual experience and timeline is unique.